Board Certified Assistant Behavior Analyst (BCaBA) Exam — Questions and Answers

Question 1: Which of the following best describes a model prompt?

Demonstrating the correct response for the learner to imitate (Correct answer)
Providing a written cue
Physically guiding the learner's hand
Presenting the SD louder than usual

Correct answer: Demonstrating the correct response for the learner to imitate

A model prompt involves the trainer demonstrating the target behavior for the learner to observe and then imitate.

Question 2: What is the primary purpose of data collection in ABA?

To create daily schedules.
To satisfy legal requirements.
To inform treatment and track progress. (Correct answer)
To monitor therapist performance.

Correct answer: To inform treatment and track progress.

Data collection in ABA is fundamental for making informed decisions about a client's treatment plan. It allows practitioners to objectively measure the frequency, duration, or intensity of behaviors, track changes over time, and determine the effectiveness of interventions. Without accurate data, it would be impossible to assess progress or make necessary adjustments to therapy.

Question 3: A behavior analyst is deciding between two maintenance strategies for a learner who has mastered labeling coins. Option A: provide reinforcement on an FI 5-minute schedule. Option B: provide reinforcement on a VI 5-minute schedule. Which option better supports maintenance and why?

Option B, because variable schedules produce responding that is more resistant to extinction (Correct answer)
Option A, because the predictability of the fixed interval reduces learner frustration and thus dropout
Option A, because the fixed schedule produces higher overall rates of responding between reinforcements
Option B, because variable schedules always produce higher response rates than fixed schedules

Correct answer: Option B, because variable schedules produce responding that is more resistant to extinction

Variable schedules of reinforcement produce behavior that is substantially more resistant to extinction than fixed schedules, making them superior for maintenance. On an FI schedule, the post-reinforcement pause is a reliable pattern that, over time, can lead to lower responding and faster extinction when reinforcement is withdrawn entirely. VI schedules eliminate this pause effect and produce steady, persistent responding. The claim that variable schedules always produce higher rates (Option D) is incorrect — FI/FR often produce high rates near the fixed interval/ratio; the critical advantage of variable schedules is resistance to extinction, not necessarily absolute rate.

Question 4: A BCBA is implementing differential reinforcement of alternative behavior (DRA) for a client whose problem behavior is maintained by attention. The client has not yet acquired the alternative communicative response. Which procedural modification is MOST critical to prevent inadvertent reinforcement of the target behavior during early DRA implementation?

Pairing the alternative response with a token economy to delay the delivery of attention
Using a lag reinforcement schedule so the client must vary responses before earning attention
Thinning the reinforcement schedule for the alternative behavior immediately to promote generalization
Ensuring the magnitude and immediacy of reinforcement for the alternative response exceeds that historically provided for the problem behavior (Correct answer)

Correct answer: Ensuring the magnitude and immediacy of reinforcement for the alternative response exceeds that historically provided for the problem behavior

For DRA to effectively compete with a well-established problem behavior, the alternative behavior must contact reinforcement that is more immediate, of greater magnitude, and delivered on a richer schedule than the reinforcement that previously maintained the problem behavior. If the alternative response produces weaker or delayed reinforcement, the problem behavior retains a competitive advantage. This is especially critical early in training before the alternative response is fluent.

Question 5: A BCBA discovers that a colleague has been billing insurance for behavior-analytic services that were actually delivered by an uncredentialed staff member working beyond their competence level. The colleague argues that the staff member was 'basically supervised' and the outcomes were good. Under the BACB Ethics Code, the discovering BCBA's primary obligation is to:

Document the observation and wait to see if the behavior continues before taking action
Report exclusively to the insurance company since they are the financially harmed party
Remain silent because intervening in a colleague's billing practices falls outside a behavior analyst's scope
Address the issue with the colleague first and, if unresolved, report to the appropriate authority including the BACB or relevant regulatory body (Correct answer)

Correct answer: Address the issue with the colleague first and, if unresolved, report to the appropriate authority including the BACB or relevant regulatory body

The BACB Ethics Code requires behavior analysts to address ethics violations by colleagues. The appropriate sequence is to attempt resolution directly with the colleague first (unless the situation involves harm that requires immediate reporting), and then escalate to the BACB or relevant regulatory authorities if the issue is not resolved. Fraudulent billing and practicing beyond competence both represent serious ethics violations. Staying silent, limiting reporting only to the insurer, or passively monitoring without action all fail to meet the proactive professional responsibility required by the Code.

Question 6: A therapist demonstrates washing hands step-by-step and the learner then performs the same sequence. The therapist used which type of prompt?

Physical prompt
Gestural prompt
Textual prompt
Model prompt (Correct answer)

Correct answer: Model prompt

A model prompt involves demonstrating the target behavior for the learner to imitate.

Question 7: A therapist is using a graduated guidance procedure to teach a child to wash hands. She applies hand-over-hand guidance at the start, then systematically reduces physical contact. During session 12, the child begins to pull away and show escape-maintained problem behavior when guidance is applied. The MOST function-consistent modification to the prompting procedure would be:

Switch to a least-to-most physical prompt hierarchy so guidance is only applied when necessary
Implement shadowing (hands-nearby without contact) as an intermediate step and pair guidance with highly preferred reinforcers to reduce its aversive properties (Correct answer)
Use a differential reinforcement schedule that provides denser reinforcement for unprompted steps
Discontinue graduated guidance entirely and rely on verbal prompts only

Correct answer: Implement shadowing (hands-nearby without contact) as an intermediate step and pair guidance with highly preferred reinforcers to reduce its aversive properties

If escape behavior emerges in response to physical guidance, the guidance itself has acquired aversive properties. The least-restrictive and most function-consistent response is to attenuate the aversiveness of the prompt by using shadowing (proximity without touch) as an intermediate step and pairing contact guidance with potent reinforcement to shift its conditioned value. Switching to a least-to-most hierarchy does not address the escape function of the problem behavior. Relying solely on verbal prompts may not provide enough support for acquisition.

Question 8: A practitioner teaches shoe-tying by first reinforcing any finger movement near the shoelace, then reinforcing picking up the lace, and so on. This procedure is best described as:

Shaping with prompt fading
Stimulus fading
Error correction
Chaining (Correct answer)

Correct answer: Chaining

Breaking the skill into sequential steps and teaching each link systematically describes chaining, not shaping (which changes topography of a single response).

Question 9: A client has a history of screaming to get access to a preferred toy. The behavior plan states that the technician should give the client the toy every 10 minutes, regardless of the client's behavior. This is an example of which antecedent intervention?

High-probability request sequence
Noncontingent Reinforcement (NCR) (Correct answer)
Functional Communication Training (FCT)
Priming

Correct answer: Noncontingent Reinforcement (NCR)

Noncontingent Reinforcement (NCR) is an antecedent intervention where reinforcement is delivered on a fixed-time or variable-time schedule, independent of the client's behavior. [15, 11] By providing the toy on a set schedule, the client's motivation to scream for it is reduced. [7, 10]

Question 10: A BCBA designing a token economy for a classroom notices that a student earns tokens consistently but the targeted prosocial behaviors are not generalizing outside the token economy context. According to behavior analytic principles, what is the MOST likely explanation for this failure to generalize?

The token exchange ratio is too lean and the student is experiencing motivating operations that suppress generalization
The behaviors are under narrow stimulus control, controlled primarily by the presence of the token board and delivery cues (Correct answer)
The backup reinforcers are not sufficiently motivating to compete with natural reinforcers outside the classroom
The student has not achieved fluency in the target behaviors, preventing stimulus generalization

Correct answer: The behaviors are under narrow stimulus control, controlled primarily by the presence of the token board and delivery cues

When behavior occurs in the token economy context but does not generalize, it typically indicates the behavior has come under narrow stimulus control — specifically, the presence of the token board, the technician delivering tokens, or other discriminative stimuli associated with the token economy. The behavior is an operant that has been trained under specific S^D conditions that do not exist in other settings. While motivating operations (C) and fluency (D) can affect generalization, the scenario most directly points to stimulus control as the primary explanation. Backup reinforcer motivation (A) affects acquisition, not primarily the contextual specificity of the trained behavior.

Question 11: Which of the following is an example of a PROACTIVE safety strategy?

Arranging the environment before a session to remove objects that could be used harmfully (Correct answer)
Documenting all injuries after a crisis event
Applying a physical hold as soon as self-injurious behavior begins
Calling 911 immediately at the start of any challenging behavior

Correct answer: Arranging the environment before a session to remove objects that could be used harmfully

Proactive safety strategies are put in place BEFORE a crisis occurs to prevent dangerous behavior. Examples include rearranging the physical environment, removing sharp or heavy objects, ensuring proper supervision ratios, and following recommended seating arrangements — all done in advance.

Question 12: A BCBA providing telehealth ABA services must ensure which of the following, according to ethical guidelines?

Telehealth eliminates the need for supervision of RBTs
Technological platforms used are secure, confidential, and appropriate for the client's needs (Correct answer)
Telehealth services are exempt from standard confidentiality requirements
Parental consent is not required for telehealth since no in-person contact occurs

Correct answer: Technological platforms used are secure, confidential, and appropriate for the client's needs

Ethical telehealth practice requires the same confidentiality, consent, and competence standards as in-person services, including secure platforms and appropriate supervisory oversight.

Question 13: A practitioner has been using a high-probability (high-p) request sequence for six weeks. The low-p target request compliance has improved significantly, but the high-p requests themselves have recently begun evoking non-compliance and mild aggression. Which explanation BEST accounts for this unexpected deterioration of the high-p requests?

Behavioral momentum is only maintained when high-p and low-p requests belong to the same response topography class
Through repeated pairing, the high-p requests have acquired conditioned aversive properties because they consistently precede the effortful low-p demand (Correct answer)
The client has reached a behavioral ceiling and requires a preference assessment to identify new reinforcers before continuing
The practitioner inadvertently thinned the reinforcement schedule for high-p compliance too rapidly, creating an extinction effect

Correct answer: Through repeated pairing, the high-p requests have acquired conditioned aversive properties because they consistently precede the effortful low-p demand

This phenomenon — sometimes called a 'contrast effect' or conditioned aversiveness — occurs when the high-p requests serve as a reliable temporal signal that an effortful or aversive low-p demand is imminent. Through Pavlovian conditioning, the high-p requests themselves acquire aversive properties, eroding behavioral momentum. This is a documented limitation of high-p sequences in extended implementation, and may require restructuring the sequence or increasing the reinforcer magnitude and delay after the low-p request.

Question 14: Partial interval recording tends to _______ the actual occurrence of a behavior.

Double-count
Accurately estimate
Underestimate
Overestimate (Correct answer)

Correct answer: Overestimate

Partial interval recording scores an interval as positive if the behavior occurs at any point during it, which overestimates occurrence for behaviors that are brief relative to the interval length.

Question 15: Observer drift is defined as:

The target behavior changing because it is being observed
Two observers intentionally sharing notes before independent recording
A malfunctioning data collection device that shifts recorded values
Gradual, unaware changes in an observer's application of measurement criteria over time (Correct answer)

Correct answer: Gradual, unaware changes in an observer's application of measurement criteria over time

Observer drift occurs when an observer's behavioral definitions slowly shift from the originally trained standard without the observer realizing it.

Question 16: In a least-to-most prompting hierarchy, what is the order of prompt intrusiveness from least to most?

Full physical > Partial physical > Gestural > Verbal
Independent > Verbal > Gestural > Physical (full physical)
Physical > Gestural > Verbal > Independent
Verbal > Visual > Gestural > Partial physical > Full physical (Correct answer)

Correct answer: Verbal > Visual > Gestural > Partial physical > Full physical

A typical least-to-most hierarchy progresses: verbal → visual → gestural → partial physical → full physical, with the trainer waiting between each level.

Question 17: During a functional analysis, escape-maintained problem behavior is confirmed. The team implements high-probability request sequences (high-p) before low-probability demands. After three sessions, problem behavior during low-p requests has increased. What is the MOST likely explanation?

The inter-request interval between high-p and low-p was too short, creating response fatigue
The function was incorrectly identified and the behavior is actually attention-maintained
The high-p requests were not sufficiently reinforcing, reducing behavioral momentum
The high-p requests inadvertently became a discriminative stimulus (SD) signaling the upcoming aversive low-p demand (Correct answer)

Correct answer: The high-p requests inadvertently became a discriminative stimulus (SD) signaling the upcoming aversive low-p demand

When high-p requests reliably precede aversive low-p demands, the high-p sequence can acquire conditioned aversive properties through respondent conditioning — becoming an SD for the upcoming escape opportunity. This is a documented failure mode of behavioral momentum interventions and requires restructuring the sequence or embedding low-p tasks differently.

Question 18: A behavior analyst reviews data showing that a client's problem behavior has a bimodal distribution across the day — peaks at 9–10 AM and again at 2–3 PM — with near-zero rates in between. Staff report no obvious antecedent changes at those times. Which assessment strategy would yield the most temporally sensitive information about the motivating operations at play?

A standard descriptive ABC analysis conducted throughout the full school day
A preference assessment conducted at peak versus off-peak times to detect motivating operation shifts
An analogue functional analysis with extended session lengths to capture both peaks
A conditional probability analysis of antecedent events stratified by time-of-day intervals (Correct answer)

Correct answer: A conditional probability analysis of antecedent events stratified by time-of-day intervals

A conditional probability analysis stratified by time-of-day allows the analyst to calculate the probability of problem behavior given specific antecedent events separately for peak and off-peak intervals. This directly tests whether particular antecedents are more likely to precede behavior during peak times, pointing toward time-linked motivating operations (e.g., hunger before lunch, fatigue after exertion). A standard descriptive ABC collapses across time and would obscure the temporal pattern. Analogue FA sessions conducted at fixed times would not capture the naturalistic motivating operations driving the bimodal pattern unless specifically timed to match peaks. A preference assessment reveals reinforcer efficacy shifts but does not identify antecedent events triggering the behavior.

Question 19: What are the four most commonly identified functions of challenging behavior in ABA?

Communication, emotion regulation, social skills deficits, and self-esteem
Frustration, boredom, anxiety, and confusion
Attention, escape, access to tangibles, and automatic/sensory reinforcement (Correct answer)
Positive reinforcement, negative reinforcement, punishment, and extinction

Correct answer: Attention, escape, access to tangibles, and automatic/sensory reinforcement

The four functions of behavior — often remembered with the acronym SEAT — are Social/attention, Escape from demands or aversive stimuli, Access to tangibles or preferred activities, and Automatic (sensory) reinforcement that occurs independent of the social environment.

Question 20: When implementing noncontingent reinforcement (NCR) on a fixed-time (FT) schedule, reinforcement is delivered:

After each instance of the target behavior
At the end of every session regardless of behavior
Only when the learner makes a verbal request
At set time intervals independent of behavior (Correct answer)

Correct answer: At set time intervals independent of behavior

Fixed-time NCR delivers reinforcement at regular, predetermined intervals regardless of what behavior is occurring at that moment.

Question 21: When documenting session data, which of the following best protects client confidentiality?

Discussing client progress details in a public waiting room with parents
Using initials or a client ID instead of the full name on all data sheets taken off-site (Correct answer)
Leaving printed data sheets in the car overnight for convenience
Sharing session notes with any school staff member who asks about the client

Correct answer: Using initials or a client ID instead of the full name on all data sheets taken off-site

HIPAA and ethical guidelines require that Protected Health Information (PHI) be safeguarded. Using initials or client IDs on data sheets that may be transported or stored reduces the risk of unauthorized disclosure if materials are lost or seen by others.

Question 22: Which of the following scenarios would most warrant using duration recording rather than frequency recording?

A child claps their hands during a song
A student engages in prolonged out-of-seat behavior throughout the school day (Correct answer)
A therapist counts the number of problem behaviors per hour
A client produces a single vocal request

Correct answer: A student engages in prolonged out-of-seat behavior throughout the school day

Duration recording is most appropriate for continuous behaviors where how long the behavior lasts is more clinically relevant than how many times it occurs.

Question 23: A BCBA who specializes in pediatric ABA is asked by a former client's family (services ended 14 months ago) to provide ABA services to a new sibling recently diagnosed with ASD. The BCBA has a strong prior relationship with the family. According to the BACB Ethics Code's guidance on multiple relationships, what is the MOST accurate characterization of this situation?

This is permissible without restriction because the prior professional relationship has ended and the new client is a different individual
This requires careful evaluation: the BCBA must assess whether the prior relationship creates a risk of harm, exploitation, or compromised objectivity before accepting, and should document this analysis (Correct answer)
This is categorically prohibited because any relationship with a former client's family constitutes a multiple relationship that impairs objectivity
This is permissible only if at least 24 months have elapsed since the termination of services with the former client, per the Ethics Code's mandatory waiting period

Correct answer: This requires careful evaluation: the BCBA must assess whether the prior relationship creates a risk of harm, exploitation, or compromised objectivity before accepting, and should document this analysis

The BACB Ethics Code does not impose a blanket prohibition or a mandatory waiting period for this scenario. Instead, it requires that behavior analysts avoid multiple relationships that could impair objectivity or risk exploitation. Accepting the sibling as a client involves a pre-existing relationship with the family, which could create role confusion or boundary issues. The analyst must proactively evaluate these risks, document the analysis, and proceed only if they can serve the new client with full objectivity—or decline if they cannot.

Question 24: Which of the following describes the appropriate use of social media by ABA professionals?

Accepting client family members as social media connections to strengthen therapeutic relationships
Maintaining strict confidentiality on all platforms and not sharing identifying client information without consent (Correct answer)
Sharing anonymized case examples to educate the public is always acceptable without further consideration
Posting identifiable information about a client for educational purposes with supervisor approval

Correct answer: Maintaining strict confidentiality on all platforms and not sharing identifying client information without consent

ABA professionals must maintain client confidentiality on social media platforms just as they would in any other context.

Question 25: Why is interval-by-interval IOA (also called scored-interval IOA) considered more rigorous than total-count IOA?

It can be computed with only one observer present
It automatically corrects for observer drift over time
It compares agreement on each individual interval, capturing both occurrence and non-occurrence agreement (Correct answer)
It requires a shorter observation session to yield reliable data

Correct answer: It compares agreement on each individual interval, capturing both occurrence and non-occurrence agreement

Total-count IOA compares only the overall totals between observers, which can mask disagreements within the session (e.g., one observer records behavior in the first half, the other in the second half, yet totals match). Interval-by-interval IOA checks agreement on every interval independently, making it sensitive to both when behavior was and was not recorded.

Question 26: Duration recording is BEST suited for behaviors where the primary clinical concern is:

How much time elapses between two consecutive behaviors
How many times the behavior occurs each session
How long each episode of the behavior lasts (Correct answer)
How quickly the behavior begins after a cue

Correct answer: How long each episode of the behavior lasts

Duration recording captures the elapsed time from the onset to the offset of each behavioral episode, making it ideal when episode length is clinically relevant.

Question 27: A graph shows a descending trend during intervention for a target behavior that should be decreasing. This pattern indicates:

Baseline data collection should be restarted
Intervention is producing the desired therapeutic effect (Correct answer)
The behavior is in the extinction burst phase
Intervention is ineffective and should be changed

Correct answer: Intervention is producing the desired therapeutic effect

A descending trend for a behavior targeted for reduction indicates the intervention is effectively decreasing the behavior.

Question 28: A BCBA receives a referral for a new adult client with intellectual disability and severe self-injurious behavior (SIB). The referring agency is pressuring the BCBA to begin a behavior reduction plan using a Level 1 restrictive procedure immediately because staff injuries are escalating. The BCBA has not yet completed a functional behavior assessment. Which action most accurately reflects ethical practice?

Implement the least restrictive response protocol for the acute SIB while clearly communicating to the agency that a function-based behavior intervention plan cannot be ethically developed without completing a functional assessment first (Correct answer)
Decline the case entirely since the agency is pressuring for non-evidence-based practice
Implement the restrictive procedure temporarily to protect staff safety while completing the FBA concurrently, since safety emergencies can justify bypassing assessment
Implement the plan the agency requests and document that the decision was made under agency direction, which transfers liability

Correct answer: Implement the least restrictive response protocol for the acute SIB while clearly communicating to the agency that a function-based behavior intervention plan cannot be ethically developed without completing a functional assessment first

BACB ethics require that behavior reduction plans, particularly those involving restrictive procedures, be grounded in functional assessment data. However, the BCBA also has an obligation to client and staff safety. The ethical path is to use the least restrictive emergency safety protocols for acute incidents while refusing to develop a formal behavior intervention plan without an FBA, and clearly communicating this to the agency. Documenting that an agency directed non-evidence-based practice does not absolve the practitioner of ethical responsibility.

Question 29: Under the BACB Ethics Code, how should a BCBA handle a situation where a supervisee is implementing an intervention incorrectly despite repeated feedback?

Report the supervisee to the BACB immediately
Ignore the issue to preserve the working relationship
Continue providing feedback indefinitely until improvement occurs
Document concerns and, if unresolved, take formal corrective action or terminate the supervisory relationship (Correct answer)

Correct answer: Document concerns and, if unresolved, take formal corrective action or terminate the supervisory relationship

BCBAs must document supervisory concerns and take formal corrective action, up to and including termination of the supervisory relationship, if a supervisee does not improve.

Question 30: Which of the following BEST describes 'pivotal response training' (PRT) as used in ABA for individuals with ASD?

A structured curriculum that teaches academic readiness skills in a one-to-one format
A discrete-trial procedure conducted entirely at a table with massed practice trials
A naturalistic intervention targeting pivotal areas such as motivation and self-management to produce broad collateral improvements (Correct answer)
A parent-training model focused exclusively on reducing problem behavior through extinction

Correct answer: A naturalistic intervention targeting pivotal areas such as motivation and self-management to produce broad collateral improvements

PRT is a naturalistic, play-based ABA approach developed by Koegel and colleagues that targets 'pivotal' behavioral areas — motivation, responsivity to multiple cues, self-management, and social initiations — because improvements in these areas produce widespread collateral gains across untrained behaviors and settings.

Question 31: A learner's skill acquisition program specifies a mastery criterion of '80% correct across 3 consecutive sessions.' The learner achieves this criterion but regresses to 40% accuracy two weeks later with no program changes. Which factor is MOST likely responsible, and what is the appropriate programmatic response?

The mastery criterion was set too high; lower it to 70% and resume teaching
The mastery criterion was set too low or maintenance probes were not scheduled; raise the criterion and implement a systematic maintenance schedule (Correct answer)
The task analysis is flawed; revise the steps and restart teaching from the beginning
The reinforcer has lost its value; conduct a new preference assessment and resume massed practice

Correct answer: The mastery criterion was set too low or maintenance probes were not scheduled; raise the criterion and implement a systematic maintenance schedule

Rapid regression after meeting criterion typically indicates the criterion was insufficient to establish durable responding, or that maintenance probing and thinned reinforcement schedules were not built into the program. The appropriate response is to raise the mastery criterion (e.g., 90% across 5 sessions) and implement a formal maintenance schedule with distributed practice. Lowering the criterion or restarting with a new task analysis does not address the maintenance failure.

Question 32: A line graph is the standard method for displaying ABA behavioral data because it:

Automatically calculates statistical significance of behavior change
Allows visual inspection of trends, changes across phases, and the effect of interventions over time (Correct answer)
Is required by HIPAA for all clinical documentation
Is faster to draw than a bar graph and requires less training to read

Correct answer: Allows visual inspection of trends, changes across phases, and the effect of interventions over time

Line graphs allow practitioners to visually inspect data trends, compare baseline and intervention phases, and identify whether behavior is increasing, decreasing, or stable across time — a core skill in ABA called visual analysis.

Question 33: A therapist systematically reduces the number of high-p requests in the instructional sequence from five to three to one over several weeks. This reflects which process?

Extinction of compliance
Generalization programming
Prompt fading
Thinning the high-p sequence (Correct answer)

Correct answer: Thinning the high-p sequence

Thinning the high-p sequence gradually reduces the number of easy requests needed before the low-p request, working toward compliance without needing the full momentum-building sequence.

Question 34: Which measurement approach would be MOST appropriate for tracking aggression that varies in intensity and duration?

Permanent product recording
Whole-interval recording
Duration recording with severity rating (Correct answer)
Frequency count only

Correct answer: Duration recording with severity rating

Duration recording combined with a severity rating captures both how long aggressive episodes last and their intensity.

Question 35: An ABAT is working with a child who frequently covers their ears and cries in the school cafeteria, which is often loud and crowded. However, the child seems to not notice when they scrape their knee on the playground. This child's behavior is most likely indicative of which common characteristic of ASD?

Deficits in social-emotional reciprocity.
Hyper- and hypo-reactivity to sensory input. (Correct answer)
Stereotyped or repetitive motor movements.
Insistence on sameness and inflexible adherence to routines.

Correct answer: Hyper- and hypo-reactivity to sensory input.

The child is demonstrating hyper-reactivity (oversensitivity) to auditory stimuli (loud noises) and hypo-reactivity (undersensitivity) to tactile/pain stimuli (scraping a knee). This combination is a key example of the atypical sensory processing common in ASD, which is a criterion under the restricted/repetitive behaviors domain.

Question 36: A BCBA is consulting in a group home where staff inconsistently deliver tokens — some staff deliver tokens contingently while others deliver them non-contingently to avoid client protests. Over time, the target behaviors decrease while problem behavior during token delivery attempts increases. This pattern is BEST explained by which combination of behavioral principles?

The non-contingent token delivery has created satiation for the backup reinforcers, simultaneously weakening the conditioned value of tokens through extinction of the token-backup reinforcer pairing
Inconsistent token delivery has inadvertently placed problem behavior on a variable ratio schedule of non-contingent reinforcement, making it highly resistant to extinction
The staff variability has created a multiple schedule in which the token board functions as an S+ in some contexts and an S-delta in others, degrading its discriminative value
Intermittent non-contingent reinforcement has created a concurrent schedule that reinforces problem behavior, while contingent token delivery has become an S-delta for protest (Correct answer)

Correct answer: Intermittent non-contingent reinforcement has created a concurrent schedule that reinforces problem behavior, while contingent token delivery has become an S-delta for protest

When some staff deliver tokens non-contingently to avoid protest, they are placing protest/problem behavior on an intermittent schedule of negative reinforcement (staff avoid protest by delivering tokens) and simultaneously reinforcing protest non-contingently. This creates a concurrent schedule arrangement where problem behavior is reinforced (non-contingent token delivery following protest) while the contingent delivery by other staff becomes a discriminative stimulus that signals a condition where protest will NOT result in immediate token delivery — making contingent delivery an S-delta for protest. Option B (satiation) could be a secondary factor but doesn't explain the increase in problem behavior during token delivery attempts. Option C describes VR non-contingent reinforcement but mischaracterizes the functional relationship. Option D describes a multiple schedule effect but doesn't account for the reinforcement of problem behavior itself.

Question 37: When using a time delay procedure, a practitioner presents the S-D, waits 4 seconds, then delivers the controlling prompt if no response occurs. Over sessions, the learner begins to respond correctly before the delay elapses. This pattern of responding is BEST described as:

Prompt intrusion
Superstitious behavior maintained by noncontingent reinforcement
Anticipatory responding indicating transfer of stimulus control to the S-D (Correct answer)
Backward chaining of the response chain

Correct answer: Anticipatory responding indicating transfer of stimulus control to the S-D

In a constant or progressive time delay procedure, responding before the delay elapses (before the controlling prompt is delivered) indicates that the natural antecedent — the S-D — has gained stimulus control over the behavior. This is the intended outcome of time delay: the learner 'beats the prompt' because the S-D alone now evokes the response. This is sometimes called anticipatory responding and represents successful prompt fading.

Question 38: A behavior analyst is using differential reinforcement of alternative behavior (DRA) but notices the target behavior is still occurring at high rates despite consistent implementation. Upon review, the alternative behavior produces reinforcement on a FR5 schedule while the target behavior produces reinforcement on a VR2 schedule in the natural environment. What is the MOST likely explanation for treatment failure?

DRA is contraindicated when the target behavior is maintained by positive reinforcement
The FR5 schedule should be replaced with an extinction schedule for the alternative behavior
The alternative behavior's reinforcement schedule is leaner than the target behavior's schedule, reducing its relative value (Correct answer)
The VR schedule creates ratio strain that should extinguish the target behavior naturally

Correct answer: The alternative behavior's reinforcement schedule is leaner than the target behavior's schedule, reducing its relative value

For DRA to be effective, the alternative behavior must contact reinforcement that is at least as rich (dense) as what the target behavior produces. Here, the alternative behavior requires 5 responses per reinforcer (FR5) while the target behavior averages only 2 responses per reinforcer (VR2). This means the target behavior is more efficient, so the organism will continue preferring it. The matching law predicts response allocation proportional to reinforcement rates, so the leaner schedule on the alternative behavior undermines treatment.

Question 39: An RBT is working with a 10-year-old client when the client discloses that a family friend 'touches me in ways I don't like.' The RBT is not a mandated reporter in their state under the specific licensure category they hold. What should the RBT do?

Ask the client clarifying questions to gather more detail before deciding whether the disclosure warrants escalation
Independently file a report with child protective services since the welfare of the client supersedes professional role limitations
Reassure the child and take no further action since the RBT is not a mandated reporter
Document the disclosure verbatim, immediately inform the supervising BCBA, and follow agency and supervisor guidance on reporting obligations (Correct answer)

Correct answer: Document the disclosure verbatim, immediately inform the supervising BCBA, and follow agency and supervisor guidance on reporting obligations

Even if the RBT is not independently a mandated reporter, they have an ethical obligation to protect client welfare (Ethics Code Section 2) and must immediately inform their supervising BCBA. The supervisor and/or agency will then determine reporting obligations. The RBT should never independently question the child in ways that could compromise a potential investigation, and inaction is never appropriate when a child discloses possible abuse.

Question 40: Which concept explains why a child who was scolded (punished) for lying will stop lying in front of the teacher but continues to lie at home?

Stimulus overselectivity
Stimulus discrimination (Correct answer)
Response generalization
Behavioral contrast

Correct answer: Stimulus discrimination

Stimulus discrimination occurs when a behavior is reinforced in the presence of one stimulus (SD) but not another (SΔ), producing differential responding.

Question 41: We are using a CRF-1 schedule we must be trying to do what to the behavior?

Reduce strength
Decrease duration
Increase duration
First strengthen a low-rate behavior (Correct answer)

Correct answer: First strengthen a low-rate behavior

Explanation: <br> The use of a CRF-1 schedule indicates that we are trying to first strengthen a low-rate behavior. A CRF-1 schedule, also known as a continuous reinforcement schedule, involves reinforcing a behavior every time it occurs. This is typically used when trying to establish a new behavior or increase the frequency of a behavior that is currently occurring at a low rate. By reinforcing the behavior every time it happens, we are aiming to increase its strength and likelihood of occurring in the future.

Question 42: Which of the following is the MOST important element to include in a session note written by an ABA technician?

Predictions about future behavior based on the technician's experience
Personal opinions about the client's motivation during the session
Comparisons between the client and other clients on the caseload
Objective, observable descriptions of target behaviors and the data collected (Correct answer)

Correct answer: Objective, observable descriptions of target behaviors and the data collected

Session notes must be objective and based on observable, measurable behavior. They should include what target behaviors were addressed, the data recorded, and any relevant events, written without personal interpretation or comparison to others.

Question 43: When introducing a new skill, a behavior analyst provides full physical guidance and gradually removes prompts as the learner demonstrates the behavior independently. This prompt-fading strategy is called:

Least-to-most prompting
Stimulus shaping
Most-to-least prompting (Correct answer)
Time delay

Correct answer: Most-to-least prompting

Most-to-least prompting begins with the most intrusive prompt and systematically fades to less intrusive prompts as the learner acquires the skill.

Question 44: Which behavior reduction strategy involves systematically teaching acceptable ways to obtain the same function as the problem behavior?

Satiation
Functional Communication Training (FCT) (Correct answer)
Overcorrection
Extinction

Correct answer: Functional Communication Training (FCT)

FCT teaches a communicative alternative that produces the same reinforcer as the problem behavior, making the problem behavior less necessary.

Question 45: In the context of antecedent-based interventions, environmental modification refers to:

Using medication to reduce problem behavior
Teaching replacement behaviors through differential reinforcement
Changing consequences that follow problem behavior
Altering physical or social stimuli in the environment to reduce problem behavior (Correct answer)

Correct answer: Altering physical or social stimuli in the environment to reduce problem behavior

Environmental modification involves changing antecedent conditions (e.g., seating, noise level, task materials) to reduce triggers for problem behavior.

Question 46: Why is it unethical to make false claims about a client’s progress?

It can delay therapy
It is costly for insurance
It misleads stakeholders (Correct answer)
It affects billing

Correct answer: It misleads stakeholders

Making false claims about a client's progress is unethical because it misrepresents the client's actual status and can mislead all stakeholders, including the client, their family, funding sources, and other professionals. This can lead to inappropriate treatment decisions, misallocation of resources, and a breach of trust, ultimately harming the client's long-term progress and the integrity of the service.

Question 47: A Behavior Intervention Plan (BIP) should be developed primarily based on information from:

Direct observation data collected in only one setting
Parent or caregiver interviews alone
A reinforcer preference assessment alone
A Functional Behavior Assessment (FBA) (Correct answer)

Correct answer: A Functional Behavior Assessment (FBA)

A BIP must be function-based, meaning it is built from an FBA that identifies the antecedents, behaviors, and consequences maintaining the problem behavior.

Question 48: The concept of 'interobserver agreement' (IOA) in ABA is used to:

Verify the accuracy and reliability of behavioral data (Correct answer)
Measure the generalization of behavior across settings
Assess the social validity of a behavior change program
Ensure that intervention procedures are followed correctly

Correct answer: Verify the accuracy and reliability of behavioral data

IOA is calculated by comparing data collected independently by two observers to evaluate the reliability and accuracy of the measurement system.

Question 49: A scatter plot is used in functional behavior assessment primarily to:

Measure the duration of each behavioral episode during a session
Record the specific consequences that follow a problem behavior
Identify times of day or conditions during which a target behavior is most and least likely to occur (Correct answer)
Graph the total frequency of behavior across an entire school year

Correct answer: Identify times of day or conditions during which a target behavior is most and least likely to occur

A scatter plot is an indirect assessment tool that maps behavior occurrence across time intervals (e.g., hour blocks, class periods) over multiple days. Patterns in the scatter plot reveal when or under what conditions the behavior is most likely, guiding the development of a hypothesis about its function.

Question 50: A learner reads a word written on a card and then writes that same word on paper. This verbal operant combination is best described as:

Tact followed by transcription
Echoic followed by intraverbal
Intraverbal followed by tact
Textual followed by copying-a-text (Correct answer)

Correct answer: Textual followed by copying-a-text

Reading printed text aloud is textual behavior; reproducing written text in writing is copying-a-text, both involving point-to-point correspondence.

Question 51: A technician is using momentary time sampling (MTS) every 60 seconds to measure on-task behavior during a 20-minute work period. Unknown to the technician, the client exhibits a cyclical pattern of on-task behavior that peaks and troughs every 60 seconds in near-perfect synchrony with the observation intervals. What is MOST likely to result?

MTS will produce valid estimates because the law of large numbers ensures accuracy over 20 observation points
The data will be systematically biased, either drastically overestimating or underestimating the true prevalence of on-task behavior (Correct answer)
The sampling error will be random and thus will not affect the mean score across sessions
This scenario is impossible in applied settings and does not represent a real threat to MTS validity

Correct answer: The data will be systematically biased, either drastically overestimating or underestimating the true prevalence of on-task behavior

This is the aliasing problem — when the sampling interval synchronizes with the natural cycle of a behavior, MTS can capture only the peaks or only the troughs, producing a severely distorted picture. If the technician always samples during the on-task peak, prevalence will be vastly overestimated; if always during the trough, it will be vastly underestimated. This is a genuine and documented threat to MTS validity. The law of large numbers (choice B) applies to random error, not systematic bias. The error is not random (choice C) — it is systematic and directional. While rare, cyclical behaviors do occur in applied settings (choice D), making this a relevant consideration.

Question 52: Rate of behavior is calculated as:

Total duration divided by number of responses
Time from stimulus onset to first response
Number of responses divided by observation time (Correct answer)
Time between the end of one response and the start of the next

Correct answer: Number of responses divided by observation time

Rate (frequency per unit time) equals the count of responses divided by the length of the observation period, expressed as responses per minute or hour.

Question 53: Which graph type is most commonly used in ABA to display behavioral data because it clearly shows changes over time and across conditions?

Histogram
Line graph (Correct answer)
Bar graph
Pie chart

Correct answer: Line graph

Line graphs display data points connected across time, making it easy to visualize trends, variability, and effects of condition changes.

Question 54: A primary risk of failing to systematically fade prompts is:

Stimulus overselectivity
Response generalization
Discrimination errors
Prompt dependency (Correct answer)

Correct answer: Prompt dependency

Without systematic fading, learners may rely on prompts rather than natural SDs, resulting in prompt dependency.

Question 55: A BCBA designing a behavior intervention plan should ensure that goals are:

Chosen exclusively by the BCBA based on their clinical judgment
Limited to behaviors easily measurable in clinical settings only
Socially valid — meaningful, important to the client and family, and producing outcomes that matter in real-world contexts (Correct answer)
Focused only on reducing challenging behaviors, not building skills

Correct answer: Socially valid — meaningful, important to the client and family, and producing outcomes that matter in real-world contexts

Social validity requires that treatment goals, procedures, and outcomes are important and acceptable to the client, family, and community.

Question 56: A BCBA's client is a minor whose parents are divorced. Both parents have legal custody. One parent consents to a new intervention; the other objects. What should the BCBA do?

Withhold the intervention until both custodial parents provide consent or a legal resolution is reached (Correct answer)
Defer entirely to the school district's decision if the child receives school-based services
Ask the child for assent and proceed based on that
Proceed with the intervention since one consenting parent is sufficient

Correct answer: Withhold the intervention until both custodial parents provide consent or a legal resolution is reached

When both parents share legal custody, obtaining consent from both is necessary; proceeding without full agreement risks ethical and legal violations.

Question 57: A therapist holds up a picture of a dog and asks, 'What animal is this?' The client responds, 'Dog.' Later, the client smells a dog nearby (without seeing it) and says, 'Dog.' Which pair of verbal operants BEST describes these two responses, respectively?

Tact; intraverbal
Echoic; tact
Intraverbal; intraverbal
Intraverbal; tact (Correct answer)

Correct answer: Intraverbal; tact

The first response ('Dog' in response to the question 'What animal is this?') is an INTRAVERBAL — it is controlled by a verbal antecedent (the question) with no point-to-point correspondence. The second response ('Dog' in response to the nonverbal stimulus of the dog's smell) is a TACT — it is under the control of a nonverbal stimulus (the olfactory property of the dog). The antecedent modality, not topography, determines the operant class.

Question 58: A parent requests that a BCBA provide ABA services to their child but also asks the BCBA to serve as a personal life coach for the parent. What ethical issue does this present?

A multiple relationship that could impair objectivity and professional judgment (Correct answer)
An issue only if the parent pays out of pocket
A billing concern that requires separate invoices
No issue; life coaching and ABA can be combined seamlessly

Correct answer: A multiple relationship that could impair objectivity and professional judgment

Multiple relationships, where a behavior analyst serves in more than one professional or personal role with a client or client family member, can impair objectivity and must be avoided.

Question 59: Which of the following MUST be included in a proper incident report for a self-injurious behavior event?

A comparison to previous clients the technician has worked with
The technician's theory about why the behavior occurred
The technician's recommended changes to the behavior intervention plan
Date, time, objective description of the behavior, antecedent, consequence, and who was notified (Correct answer)

Correct answer: Date, time, objective description of the behavior, antecedent, consequence, and who was notified

A complete incident report requires factual, objective information: when and where it happened, exactly what behavior occurred (observable description), what preceded it (antecedent), what followed (consequence), any injuries, and who was notified. Opinions, theories, and recommendations are outside the technician's scope for incident reports.

Question 60: A student repeatedly throws materials off his desk when given a difficult worksheet. After observing that the behavior consistently stops when the teacher removes the worksheet, the behavior analyst concludes the behavior is maintained by which function?

Access to preferred items
Attention from peers
Escape from demands (Correct answer)
Automatic/sensory reinforcement

Correct answer: Escape from demands

The behavior stops when the aversive task (the difficult worksheet) is removed, meaning the student is negatively reinforced by escaping the demand. This is the escape function of behavior.

Question 61: Under the BACB Ethics Code, what standard applies when a behavior analyst is developing and disseminating new assessment or intervention products?

Products must be based on documented scientific and professional knowledge and must not make misleading claims (Correct answer)
Products only need a written disclaimer to be marketed freely
BACB approval is required for any commercially sold product
New products can be marketed based on theoretical rationale before empirical data are available

Correct answer: Products must be based on documented scientific and professional knowledge and must not make misleading claims

Behavior analysts must ensure that any products they develop or promote are grounded in established scientific evidence and do not contain false or misleading claims.

Question 62: The concept of 'stimulus equivalence' in behavior analysis refers to:

Stimuli that can be exchanged as tokens in a token economy
Two stimuli that produce the same physical sensation
Two behaviors that produce the same reinforcer
A set of stimuli that become functionally interchangeable through reflexivity, symmetry, and transitivity after training on some of the stimulus relations (Correct answer)

Correct answer: A set of stimuli that become functionally interchangeable through reflexivity, symmetry, and transitivity after training on some of the stimulus relations

Stimulus equivalence describes a derived relational phenomenon where stimuli become interchangeable through untrained but emergent relations, demonstrating reflexivity, symmetry, and transitivity.

Question 63: Which of the following is the BEST example of a non-contingent reinforcement (NCR) schedule used as an antecedent intervention?

Providing 2 minutes of attention every 5 minutes regardless of the student's behavior (Correct answer)
Withholding attention until the student makes eye contact
Giving praise only when the student completes their assignment
Delivering a token each time the student raises their hand

Correct answer: Providing 2 minutes of attention every 5 minutes regardless of the student's behavior

NCR delivers reinforcement on a time-based schedule independently of behavior, thereby abolishing the establishing operation for problem behavior maintained by that reinforcer.

Question 64: On a standard line graph used in ABA to plot behavioral data, what does the vertical axis (Y-axis) typically represent?

The location where the behavior occurred
The passage of time (e.g., sessions or days)
The measurement of the target behavior (Correct answer)
The introduction of an intervention

Correct answer: The measurement of the target behavior

In ABA line graphs, the vertical axis, or Y-axis, represents the measurement of the dependent variable, which is the target behavior (e.g., frequency, duration, percentage). The horizontal axis (X-axis) represents the passage of time.

Question 65: An ABAT is collecting data using a partial-interval recording system for a behavior that actually occurs continuously for 40% of each interval. Compared to the true duration, the recorded data will MOST likely:

Overestimate occurrence because any instance, however brief, scores the entire interval (Correct answer)
Underestimate occurrence because whole-interval recording would be needed for accurate measurement
Accurately reflect true duration since intervals are randomly assigned
Underestimate occurrence because only the end of each interval is sampled

Correct answer: Overestimate occurrence because any instance, however brief, scores the entire interval

Partial-interval recording (PIR) scores an interval as 'occurred' if the behavior happens at any point during the interval, regardless of duration. This systematically overestimates prevalence for behaviors that occur briefly. A behavior present for 40% of each interval may be scored in nearly 100% of intervals if each instance touches a new interval boundary.

Question 66: A BCBA is supervising a BCaBA whose performance has been consistently substandard despite multiple corrective feedback sessions. The BCBA has documented all supervisory interactions. The BCaBA is the sole ABA provider in a rural area serving six clients who would otherwise have no access to services. What ethical obligation governs the BCBA's supervisory decision?

Continue supervising the BCaBA indefinitely since service access for vulnerable clients in underserved areas outweighs competency concerns
Reduce the BCaBA's client load, intensify supervision, and set a defined remediation timeline with clear competency benchmarks — escalating to the BACB if competency standards cannot be met, while developing transition plans for affected clients (Correct answer)
Immediately terminate supervision and require the BCaBA to cease practice, even if this results in clients losing access to all ABA services
Transfer supervisory responsibility to another BCBA without disclosing the performance concerns to preserve the BCaBA's professional reputation

Correct answer: Reduce the BCaBA's client load, intensify supervision, and set a defined remediation timeline with clear competency benchmarks — escalating to the BACB if competency standards cannot be met, while developing transition plans for affected clients

The BACB Ethics Code requires BCBAs to ensure that supervisees demonstrate adequate competency before working independently, and to take action when supervisees do not meet standards. The access-to-services consideration is real but does not permit indefinite tolerance of substandard practice — client welfare requires competent services, not just any services. The ethical path is intensive remediation with clear benchmarks, proactive transition planning for clients, and BACB reporting if minimum competency cannot be achieved. Transferring without disclosure would hide a material concern from the incoming supervisor.

Question 67: Manipulating an establishing operation (EO) before a session reduces problem behavior by:

Delivering punishment contingent on each occurrence of the problem behavior
Increasing the value of the reinforcer that maintains the problem behavior
Temporarily decreasing the value of the reinforcer that maintains the problem behavior (Correct answer)
Providing differential reinforcement at the end of each trial

Correct answer: Temporarily decreasing the value of the reinforcer that maintains the problem behavior

Providing pre-session access to the maintaining reinforcer (an abolishing operation) reduces its current reinforcing value, thereby decreasing the individual's motivation to engage in problem behavior to obtain it during the session.

Question 68: A technician notices that a client's data shows a clear upward trend in a behavior targeted for decrease over the past two weeks. The MOST appropriate action is to:

Continue the current intervention because two weeks is not enough data to draw conclusions
Document the trend and report it to the supervising BCBA at the next opportunity (Correct answer)
Independently modify the intervention to try a new procedure
Ignore the trend and focus only on skill acquisition targets

Correct answer: Document the trend and report it to the supervising BCBA at the next opportunity

ABA technicians do not independently modify intervention plans. When data shows a concerning trend, the technician's role is to accurately document the data and communicate the finding to the supervising BCBA, who is responsible for evaluating and adjusting the treatment plan.

Question 69: Errorless learning procedures are designed primarily to:

Minimize error responses by ensuring correct responding from the outset (Correct answer)
Allow errors so learners can self-correct
Fade prompts before correct responses are established
Increase the rate of errors for discrimination training

Correct answer: Minimize error responses by ensuring correct responding from the outset

Errorless learning uses intensive prompting from the beginning to prevent errors and promote correct responding throughout acquisition.

Question 70: Which type of functional behavior assessment involves the behavior analyst directly manipulating antecedents and consequences in a controlled way to test hypotheses about the function of behavior?

Direct descriptive assessment (ABC recording)
Functional analysis (experimental analysis) (Correct answer)
Indirect assessment (interviews/rating scales)
Ecological inventory

Correct answer: Functional analysis (experimental analysis)

A functional analysis, developed by Iwata and colleagues, is an experimental method in which conditions (attention, escape, alone, play/control) are systematically manipulated to identify which consequence is maintaining the problem behavior. It provides the most direct evidence of behavioral function.

Question 71: Which of the following best defines an establishing operation (EO)?

An antecedent that increases the current value of a reinforcer and evokes behavior that has produced that reinforcer in the past (Correct answer)
A stimulus that signals reinforcement is available
A prompt that transfers stimulus control
A consequence that reduces future behavior

Correct answer: An antecedent that increases the current value of a reinforcer and evokes behavior that has produced that reinforcer in the past

An establishing operation momentarily increases the reinforcing effectiveness of a stimulus and increases the frequency of behavior that has obtained that reinforcer.

Question 72: A client's tantrum behavior has been placed on extinction. The behavior analyst observes that tantrums increase in frequency and intensity over the first week. This phenomenon is best described as:

An extinction burst (Correct answer)
Behavioral contrast
Generalization decrement
Spontaneous recovery

Correct answer: An extinction burst

An extinction burst is a temporary increase in the rate, duration, or intensity of a behavior when reinforcement is first withheld.

Question 73: In pure imitation training, reinforcement is delivered only when the learner's response:

Is prompted by a gestural cue
Exactly matches the topography of the modeled behavior (Correct answer)
Is a novel variation on the modeled response
Occurs within 5 seconds of the model

Correct answer: Exactly matches the topography of the modeled behavior

Pure imitation training reinforces only topographically exact matches to the model, establishing tight stimulus control by the model's behavior.

Question 74: Which principle supports collecting baseline data before starting an intervention?

It allows the behavior analyst to reinforce existing behavior
It determines which prompting system to use during training
It provides a reference against which the effects of the intervention can be compared (Correct answer)
It ensures the learner is maximally motivated before treatment begins

Correct answer: It provides a reference against which the effects of the intervention can be compared

Baseline data establishes the pre-intervention level of the behavior, allowing comparison to determine whether the intervention produced a meaningful change.

Question 75: A BCBA supervises a BCaBA who is also the biological sibling of a client. The BCaBA has been working with this client for two years with documented positive outcomes. According to the Ethics Code, what is the MOST appropriate course of action?

Immediately terminate the BCaBA's involvement and reassign the case without discussion
Require the BCaBA to obtain written consent from the client's guardians to continue the dual relationship
Recognize the multiple relationship, consult with a supervisor or ethics board, and develop a plan to transition the case while minimizing disruption to the client (Correct answer)
Allow the arrangement to continue since outcomes are positive and disrupting services would harm the client

Correct answer: Recognize the multiple relationship, consult with a supervisor or ethics board, and develop a plan to transition the case while minimizing disruption to the client

The Ethics Code requires practitioners to avoid multiple relationships that could impair objectivity or exploit clients. A familial relationship constitutes a prohibited multiple relationship regardless of outcomes. The correct response involves recognizing the violation, seeking consultation, and planning a transition that minimizes harm to the client — not abrupt termination or continuation without action.

Question 76: A BCBA is asked by a school district to design a token economy for an entire classroom of students with varying diagnoses. She has only conducted functional assessments on two of the eight students. The intervention will affect all students. Ethically, the BCBA should:

Decline to implement a classwide intervention until adequate assessment data exists for all students, or at minimum clarify the scope of her responsibility and ensure individualized components are addressed (Correct answer)
Implement the classwide system immediately and use it as a naturalistic assessment tool to gather data on remaining students
Delegate assessment of the unassessed students to the classroom teacher, who knows them best
Proceed because token economies are evidence-based and classwide applications inherently account for individual variation

Correct answer: Decline to implement a classwide intervention until adequate assessment data exists for all students, or at minimum clarify the scope of her responsibility and ensure individualized components are addressed

The BACB Ethics Code requires behavior analysts to base interventions on sufficient assessment data and to work within their scope of competence. A token economy affects each student's reinforcement contingencies individually, and without functional assessments for six of the eight students, the BCBA cannot ensure the intervention is appropriate, effective, or not contraindicated for those individuals. Using intervention as a substitute for assessment, or delegating professional assessment responsibility to unqualified personnel, both violate core ethical standards. The ethical path is to either gather necessary data first or clearly delineate which students fall within her professional scope.

Question 77: Which of the following best describes an ABC (Antecedent-Behavior-Consequence) recording?

A graph showing behavior frequency across sessions
A rating scale completed by caregivers about the frequency of challenging behavior at home
A checklist completed at the end of a session summarizing all observed behaviors
A narrative record of what happened before, during, and after each instance of a target behavior (Correct answer)

Correct answer: A narrative record of what happened before, during, and after each instance of a target behavior

ABC recording is a direct observation method in which the observer records the antecedent (what occurred immediately before), the behavior (exactly what the person did), and the consequence (what happened immediately after) for each instance of the target behavior.

Question 78: Which of the following is an example of negative punishment?

Providing a brief time-out in a separate room following hitting
Withdrawing attention when problem behavior occurs (extinction)
Taking away a student's recess privileges following aggressive behavior (Correct answer)
Presenting a loud noise after a disruptive behavior

Correct answer: Taking away a student's recess privileges following aggressive behavior

Negative punishment involves removing a reinforcing stimulus (recess privileges) contingent on behavior, which decreases that behavior's future frequency.

Question 79: A behavior analyst is evaluating whether a token economy is functioning as intended. Tokens have been delivered contingent on target behaviors, and clients exchange them for backup reinforcers. However, a functional analysis reveals that target behavior rates are not increasing. Which of the following is the MOST likely reason the tokens are failing to function as conditioned generalized reinforcers?

The fixed-ratio exchange schedule is too lean, making the cost of backup reinforcers too high relative to the effort required
The tokens are being delivered too frequently, causing satiation to the backup reinforcers and weakening the conditioned value of the tokens
The target behaviors are too easy, so the tokens are not functioning as a differential reinforcer
The backup reinforcers are being delivered non-contingently, preventing the establishment of the token-reinforcer pairing (Correct answer)

Correct answer: The backup reinforcers are being delivered non-contingently, preventing the establishment of the token-reinforcer pairing

For tokens to function as conditioned generalized reinforcers, they must be reliably paired with backup reinforcers (i.e., tokens must consistently predict access to backup reinforcers). If backup reinforcers are available non-contingently—independent of token exchange—the pairing is broken, and tokens lose their conditioned reinforcing value. A lean exchange schedule (option B) would slow acquisition but would not prevent conditioning. Token over-delivery (option C) can cause backup reinforcer satiation but is a secondary effect. Option D confuses response difficulty with reinforcer function.

Question 80: A behavior analyst is evaluating the effectiveness of a behavior reduction intervention. Which data pattern would indicate that the intervention is NOT working as intended?

A brief extinction burst followed by return to baseline frequency
No change in the behavior rate after several sessions of consistent implementation (Correct answer)
A temporary increase in behavior rate at the start of the intervention followed by a downward trend
A consistent downward trend in behavior rate across sessions

Correct answer: No change in the behavior rate after several sessions of consistent implementation

No change in behavior rate after multiple sessions of consistent implementation suggests the intervention is not producing the desired suppressive effect and should be revised.

Question 81: When implementing a token economy, how should tokens initially be introduced?

Deliver tokens immediately paired with a known backup reinforcer (Correct answer)
Use tokens only after the learner requests them
Give a large number of tokens at first to establish their value
Pair tokens with multiple backup reinforcers across many sessions before using them

Correct answer: Deliver tokens immediately paired with a known backup reinforcer

Tokens should be immediately and repeatedly paired with backup reinforcers so they acquire conditioned reinforcing value quickly.

Question 82: A stimulus that precedes a behavior and signals that reinforcement is available is called a:

Punisher
Motivating operation
Unconditioned stimulus
Discriminative stimulus (SD) (Correct answer)

Correct answer: Discriminative stimulus (SD)

A discriminative stimulus (SD) sets the occasion for a behavior by signaling that reinforcement is available.

Question 83: A teacher stops calling on a student who shouts out answers (extinction for attention). However, the student's shouting increases during math but decreases during reading. This is an example of:

Extinction burst
Spontaneous recovery
Overgeneralization
Behavioral contrast (Correct answer)

Correct answer: Behavioral contrast

Behavioral contrast occurs when behavior decreases in one context where extinction is applied but increases in another context where the contingency has not changed.

Question 84: Which of the following scenarios best illustrates the use of Differential Reinforcement of an Incompatible Behavior (DRI)?

A client is given a token for every 3-minute interval they go without swearing.
A client who yells out answers is reinforced for raising their hand before speaking.
A client who talks too much during class is allowed to have 5 minutes of social time if they limit their talking to 3 instances per period.
A client who bites their nails is given a fidget toy to squeeze whenever they feel the urge to bite. (Correct answer)

Correct answer: A client who bites their nails is given a fidget toy to squeeze whenever they feel the urge to bite.

Differential Reinforcement of Incompatible Behavior (DRI) involves reinforcing a behavior that cannot physically occur at the same time as the problem behavior. [2, 3] Squeezing a fidget toy is incompatible with biting nails, as both actions cannot be done simultaneously. The other options describe DRL, DRO, and DRA.

Question 85: Negative reinforcement is best defined as:

Adding a pleasant stimulus following an unwanted behavior
Removing an aversive stimulus contingent on a behavior, thereby increasing that behavior (Correct answer)
Removing a pleasant stimulus to decrease a behavior
Adding an unpleasant stimulus to decrease a behavior

Correct answer: Removing an aversive stimulus contingent on a behavior, thereby increasing that behavior

Negative reinforcement strengthens behavior by removing an aversive stimulus when the behavior occurs.

Question 86: A client engages in severe self-injurious behavior (SIB) maintained by automatic reinforcement. The behavior analyst implements a non-contingent reinforcement (NCR) schedule using preferred stimulation every 2 minutes. After 3 weeks, the SIB has not decreased. Which modification is MOST consistent with the function-based intervention logic?

Identify whether the automatic reinforcement is sensory or pain-attenuation based before modifying (Correct answer)
Decrease the NCR interval to increase the density of non-contingent stimulation satiation
Switch to a differential reinforcement of other behavior (DRO) schedule using the same preferred stimuli
Add response blocking as a supplementary procedure while keeping the NCR schedule

Correct answer: Identify whether the automatic reinforcement is sensory or pain-attenuation based before modifying

When NCR fails for automatically maintained SIB, the critical next step is to determine the specific nature of the automatic reinforcement. SIB maintained by pain attenuation (negative automatic reinforcement) requires a fundamentally different intervention than SIB maintained by sensory stimulation (positive automatic reinforcement). Simply increasing NCR density or adding response blocking without understanding this distinction could be ineffective or even contraindicated. Identifying the specific reinforcer allows for a properly matched abolishing operation or alternative stimulation strategy.

Question 87: During an indirect functional behavior assessment, an RBT is most likely to:

Observe and record behavior in the natural environment without intervening
Interview teachers, parents, and caregivers about when and where the behavior occurs (Correct answer)
Conduct structured test conditions while manipulating reinforcers
Review permanent products such as completed worksheets to count errors

Correct answer: Interview teachers, parents, and caregivers about when and where the behavior occurs

Indirect assessment methods rely on information gathered from people who know the individual well, typically through structured interviews or rating scales, rather than direct observation. They are used to generate initial hypotheses about behavioral function.

Question 88: An ABA practitioner withholds reinforcement for a previously reinforced behavior. The initial temporary increase in the behavior before it decreases is called:

Spontaneous recovery
Response generalization
Extinction burst (Correct answer)
Behavioral momentum

Correct answer: Extinction burst

An extinction burst is the temporary increase in frequency, intensity, or variability of behavior when reinforcement is first discontinued.

Question 89: A student emits 12 self-stimulatory behaviors during a 20-minute recess session and 12 during a 40-minute classroom session. Which dimension of behavior best allows a fair comparison between these two observations?

Latency
Inter-response time
Frequency
Rate (Correct answer)

Correct answer: Rate

Rate (responses per unit of time, e.g., per minute) standardizes count data across sessions of different lengths. Raw frequency counts are misleading when observation periods differ; dividing the count by session duration yields a comparable measure across sessions.

Question 90: During baseline, a client's aggressive behavior shows a highly variable, ascending trend. A behavior analyst initiates an intervention in the next phase. After 5 sessions, aggression is lower on average than baseline but still shows an ascending trend. Which conclusion is MOST defensible from a behavior-analytic data interpretation standpoint?

The intervention's effect is ambiguous; the ascending trend indicates that if the current trajectory continues, aggression may eventually exceed baseline levels (Correct answer)
Insufficient data exist to draw any conclusion; at least 10 data points per phase are required by BACB standards
The intervention is effective because the level has decreased relative to baseline mean
The intervention is ineffective because a true intervention effect requires both a level change and a trend reversal

Correct answer: The intervention's effect is ambiguous; the ascending trend indicates that if the current trajectory continues, aggression may eventually exceed baseline levels

Visual analysis in ABA examines level, trend, and variability both within and between phases. While the intervention produced a level change (lower mean), the persistence of an ascending trend within the intervention phase is a critical warning sign: if this trajectory continues, behavior will worsen past baseline levels. A defensible conclusion acknowledges both the apparent benefit (level) and the threat (trend). Choice B is incorrect because it ignores the trend entirely. Choice C overstates the requirement — a level change alone can be meaningful, but here the trend undermines it. Choice D is incorrect; the BACB does not mandate a specific minimum number of data points, and guidelines emphasize interpretive rigor, not arbitrary thresholds.

Question 91: A BCBA working in a school district is asked by an administrator to diagnose a student with an intellectual disability so the district can qualify for additional funding. The BCBA has conducted extensive assessments and believes the diagnosis is clinically appropriate. What is the MOST ethically correct course of action?

Document the assessment results in terms of behavioral deficits without using diagnostic language, and support the referral process
Decline to provide a formal diagnosis, as BCBAs are not licensed to diagnose intellectual disabilities, and refer to a qualified diagnostician (Correct answer)
Provide a provisional diagnosis contingent on future assessment by a licensed psychologist
Provide the diagnosis since clinical findings support it and additional funding would benefit the student

Correct answer: Decline to provide a formal diagnosis, as BCBAs are not licensed to diagnose intellectual disabilities, and refer to a qualified diagnostician

Diagnosing intellectual disabilities falls outside the scope of practice for BCBAs, regardless of clinical assessment skills or the appropriateness of the potential diagnosis. The BACB Ethics Code explicitly prohibits practitioners from claiming competencies or performing services outside their defined scope of practice. The BCBA must decline the diagnostic request and refer to a licensed psychologist or physician who holds the legal and clinical authority to make such diagnoses. Financial incentives for the school district do not expand the BCBA's scope of practice.

Question 92: A practitioner is fading prompts for a self-care task using a least-to-most prompt hierarchy. The client has reached independence on steps 1–5 of a 10-step task analysis but consistently requires a gestural prompt on step 6 across 15 sessions with no improvement. The MOST appropriate modification, consistent with behavioral principles, is to:

Switch to a most-to-least hierarchy exclusively for step 6 while maintaining the least-to-most hierarchy for the remaining steps, addressing the specific breakdown point without disrupting the established chain
Conduct a task analysis revision to determine whether step 6 contains multiple behavioral components that should be separated, and apply a within-step shaping procedure to the isolated sub-component (Correct answer)
Remove step 6 from the chain temporarily, train it in isolation using backward chaining, and then reintegrate it into the full chain once independent responding is achieved
Increase the magnitude of the reinforcer delivered contingent on step 6 performance and introduce a token economy for correct gestural-prompt trials until independent responding is established

Correct answer: Conduct a task analysis revision to determine whether step 6 contains multiple behavioral components that should be separated, and apply a within-step shaping procedure to the isolated sub-component

When a learner plateaus at a single step within a task analysis despite extensive intervention, the most behavior-analytically sound first step is to examine whether the task analysis itself is appropriately granular. Step 6 may contain two or more behavioral components that have been lumped into one step, making it an unreasonably large unit of behavior. Breaking it into sub-steps and applying a within-step shaping procedure targets the actual behavioral unit responsible for the breakdown. Switching hierarchies or removing the step addresses surface features without diagnosing the underlying learning unit problem. Increasing reinforcer magnitude would be appropriate for a motivation issue, which is not indicated here.

Question 93: In ABA, a 'trial' most commonly refers to:

A single instance of the antecedent–behavior–consequence sequence (Correct answer)
A full therapy session
A type of punishment procedure
A week-long data collection period

Correct answer: A single instance of the antecedent–behavior–consequence sequence

A trial is a discrete antecedent–behavior–consequence (A-B-C) sequence used as the basic unit of instruction in ABA.

Question 94: Which of the following BEST describes the difference between a DRO and a DRI schedule?

DRO requires continuous recording; DRI requires interval recording
DRO is used for self-injury; DRI is used for aggression
DRO reinforces low rates; DRI reinforces the absence of behavior
DRO reinforces any behavior other than the target behavior; DRI reinforces a specific behavior incompatible with the target behavior (Correct answer)

Correct answer: DRO reinforces any behavior other than the target behavior; DRI reinforces a specific behavior incompatible with the target behavior

DRO (Differential Reinforcement of Other Behavior) reinforces the absence of the target behavior, while DRI reinforces a response that is physically incompatible with the problem behavior.

Question 95: Which statement BEST reflects the requirement for supervised practice before taking the RBT certification exam?

At least 5% of hours must be supervised by a BCBA or BCaBA before the exam
Candidates need only complete a one-day workshop
No supervision is required — candidates study independently
Candidates must complete 40 hours of training and ongoing supervision at a minimum of 5% of hours per month (Correct answer)

Correct answer: Candidates must complete 40 hours of training and ongoing supervision at a minimum of 5% of hours per month

The RBT requires 40 hours of initial training and ongoing supervision of at least 5% of monthly service hours by a qualified supervisor.

Question 96: When implementing a behavior reduction plan, which factor is MOST critical to consider before selecting a punishment procedure?

The function of the behavior as identified through functional assessment (Correct answer)
The time of day when the behavior most often occurs
The age of the behavior analyst implementing the plan
The number of staff available to implement the procedure

Correct answer: The function of the behavior as identified through functional assessment

Knowing the function of the behavior allows the clinician to select interventions that address the maintaining variables and pair punishment with function-based reinforcement.

Question 97: Positive practice overcorrection requires the individual to:

Pay a fine in tokens following each misbehavior
Restore the environment to its original or better condition
Sit quietly in a time-out area for a fixed period
Repeatedly practice the correct form of the behavior (Correct answer)

Correct answer: Repeatedly practice the correct form of the behavior

Positive practice overcorrection requires the individual to repeatedly perform the appropriate behavior contingent on each instance of the problem behavior.

Question 98: Which of the following is the best example of a conditioned motivating operation (CMO)?

Temperature increase making a cool breeze more reinforcing
Water satiation reducing the reinforcing value of water
Food deprivation making food a stronger reinforcer
A warning tone that was paired with shock now increasing the effectiveness of escape-related behavior (Correct answer)

Correct answer: A warning tone that was paired with shock now increasing the effectiveness of escape-related behavior

A CMO is a motivating operation whose value-altering effect is acquired through learning, such as a warning signal paired with an aversive event.

Question 99: A behavior analyst is conducting a preference assessment and observes that a client consistently approaches Item A first across multiple trials but avoids re-engaging with it after brief contact. Item B is approached second but the client engages with it for extended durations. Which preference assessment format would MOST accurately capture the relative reinforcing value of these stimuli?

Single stimulus (SS) preference assessment
Paired stimulus (PS) preference assessment
Free operant (FO) preference assessment (Correct answer)
Multiple stimulus without replacement (MSWO) preference assessment

Correct answer: Free operant (FO) preference assessment

The free operant preference assessment measures the percentage of time a client engages with stimuli across an unrestricted period, capturing both approach and sustained engagement. Unlike approach-based methods (SS, PS, MSWO), it distinguishes between initial approach and actual reinforcing value, making it superior when approach frequency and engagement duration diverge.

Question 100: A behavior technician implements a token economy in which problem behavior results in response cost (token removal). The supervisor reviews data and finds that problem behavior initially decreased but has recently returned to near-baseline rates. The client's preference assessment still shows tokens are highly preferred. Which explanation is MOST consistent with behavioral theory?

The response cost contingency has been applied too inconsistently, weakening the punishing effect through intermittent reinforcement of problem behavior (Correct answer)
Satiation for the backup reinforcers has diminished the conditioned value of the tokens
The client has habituated to the tokens, so they no longer function as conditioned reinforcers
The client's problem behavior has come under the control of a new antecedent that the current token economy does not address

Correct answer: The response cost contingency has been applied too inconsistently, weakening the punishing effect through intermittent reinforcement of problem behavior

When punishment procedures are applied inconsistently — meaning the problem behavior sometimes results in response cost and sometimes does not — the behavior effectively contacts an intermittent punishment schedule. Just as intermittent reinforcement produces persistence, intermittent punishment tends to produce persistence of the punished behavior and can even strengthen it relative to continuous punishment. Consistent application is essential for response cost to maintain its suppressive effect.

Question 101: During a discrete trial training session, a technician provides a vocal prompt immediately after delivering the discriminative stimulus (SD), before the learner has an opportunity to respond. Over time, the learner only responds correctly when the prompt is present. This pattern BEST illustrates:

Prompt dependency resulting from prompt delivery that violates the response latency window (Correct answer)
Successful use of a simultaneous prompting procedure
Response generalization
Negative reinforcement of the technician's prompting behavior

Correct answer: Prompt dependency resulting from prompt delivery that violates the response latency window

When prompts are delivered before the learner has a chance to respond to the SD alone, the learner fails to develop stimulus control under the SD. The result is prompt dependency — the learner's response comes under control of the prompt rather than the SD. This violates the principle of allowing sufficient response latency before prompting.

Question 102: A new BCBA is asked to design a program for a learner with a medical condition that may affect behavior (e.g., seizure disorder). The BCBA should:

Collaborate with the medical team to ensure behavior plans account for medical factors and do not contradict medical recommendations (Correct answer)
Refuse the case entirely due to the medical complexity
Implement a standard ABA program ignoring the medical diagnosis
Design the behavior program independently without consulting medical professionals

Correct answer: Collaborate with the medical team to ensure behavior plans account for medical factors and do not contradict medical recommendations

BCBAs must collaborate with other professionals to ensure comprehensive care and that behavioral interventions are compatible with medical needs.

Question 103: Which of the following is a characteristic of an abolishing operation (AO)?

Decreases the reinforcing effectiveness of a stimulus and decreases behaviors that have been maintained by that reinforcer (Correct answer)
Signals that reinforcement is available for a specific behavior
Increases the punishing effectiveness of an aversive stimulus
Increases the reinforcing effectiveness of a stimulus

Correct answer: Decreases the reinforcing effectiveness of a stimulus and decreases behaviors that have been maintained by that reinforcer

An abolishing operation (AO) decreases the value of a reinforcer and decreases behaviors that have produced that reinforcer.

Question 104: Which of the following is an example of shaping?

Reinforcing successive approximations toward a target behavior that the learner cannot yet perform (Correct answer)
Providing reinforcement on a variable ratio schedule
Providing a complete prompt for a skill and then fading it
Chaining multiple behaviors together in a sequence

Correct answer: Reinforcing successive approximations toward a target behavior that the learner cannot yet perform

Shaping uses differential reinforcement of successive approximations to the target behavior, gradually requiring closer and closer performances.

Question 105: A skill broken into smaller teachable steps that are taught in sequence is called a:

Competing behavior pathway
Behavior contract
Task analysis (Correct answer)
Preference assessment

Correct answer: Task analysis

Task analysis involves breaking a complex skill into a sequence of smaller, discrete steps that can be taught and measured individually.

Question 106: A practitioner is using response interruption and redirection (RIRD) to reduce vocal stereotypy. The client begins engaging in the vocal stereotypy, and the practitioner issues a series of demands (unrelated to the stereotypy) until the client complies. Which ethical and procedural concern is MOST directly associated with this intervention when the stereotypy is automatically reinforced?

RIRD requires a medical waiver because it involves physical redirection of the client
RIRD cannot be used without concurrent FCT because it does not address the communicative function of the stereotypy
RIRD may function as positive punishment because demands are aversive, raising least-restrictive-alternative concerns (Correct answer)
RIRD is contraindicated for vocal stereotypy and should only be applied to motor stereotypy

Correct answer: RIRD may function as positive punishment because demands are aversive, raising least-restrictive-alternative concerns

RIRD involves presenting demands contingent on the stereotypy, which interrupts the automatic reinforcement and requires the client to engage in alternative behaviors. Because the demands are typically mildly aversive (they require effort and interrupt the preferred activity), the procedure may function as positive punishment — adding something aversive contingent on behavior. Practitioners must weigh this against least-restrictive-alternative principles and ensure the procedure is socially valid, humane, and backed by a functional assessment.

Question 107: In a reversal (ABAB) design, experimental control is demonstrated when:

Behavior remains stable across both baseline and intervention phases
Behavior changes consistently each time the intervention is introduced and withdrawn (Correct answer)
Behavior generalizes to untrained stimuli during the intervention phase
The means of two different participant groups are statistically compared

Correct answer: Behavior changes consistently each time the intervention is introduced and withdrawn

ABAB designs show experimental control by demonstrating a reliable, replicable relationship between the intervention and behavior change across multiple phase changes.

Question 108: After a client engages in a serious aggressive incident resulting in injury, the ABA technician's FIRST action should be to:

Decide independently whether the incident is severe enough to document
Wait until the next scheduled supervision meeting to report the incident
Ensure the safety of all individuals and notify the supervising BCBA as soon as possible (Correct answer)
Write a full incident report without notifying anyone until it is complete

Correct answer: Ensure the safety of all individuals and notify the supervising BCBA as soon as possible

Safety is always the first priority. After ensuring immediate safety, the technician must notify the supervising BCBA promptly — not wait until the next meeting. Incident reports follow, but the supervisor must be informed quickly so they can guide next steps and determine whether additional reporting (to parents, administrators, or regulatory bodies) is required.

Question 109: A learner can label 'apple' when shown one (tact) and can request 'apple' when hungry (mand), but fails to answer 'What do you eat for a snack?' with 'apple' (intraverbal). This pattern BEST illustrates which principle?

The independence of verbal operants — stimulus control does not automatically transfer across operant classes (Correct answer)
Stimulus generalization failure across verbal operant classes
A deficit in echoic-to-tact transfer
Response blocking caused by competing mand reinforcement

Correct answer: The independence of verbal operants — stimulus control does not automatically transfer across operant classes

One of the most clinically significant principles from Skinner's verbal behavior framework is the independence of verbal operants. Each operant class (mand, tact, intraverbal, echoic) is maintained by distinct antecedents and consequences. A learner who has acquired 'apple' as a tact and mand has NOT automatically acquired it as an intraverbal, because the antecedent stimulus (a verbal question rather than the physical object or an MO) and the reinforcement context are fundamentally different. Separate training is required for each operant class.

Question 110: The requirement to obtain ongoing consent throughout treatment (not just at initial intake) reflects which ethical principle?

Respect for autonomy and the right to make informed, ongoing decisions about one's own care (Correct answer)
Fidelity to the treatment protocol
Non-maleficence only
Beneficence only

Correct answer: Respect for autonomy and the right to make informed, ongoing decisions about one's own care

Ongoing consent reflects respect for client autonomy — clients/families have the right to re-evaluate and change their consent as treatment evolves.

Question 111: A BCBA notices that a client's newly learned communication skill is only performed during ABA therapy but not at school. The MOST appropriate immediate step is to:

Conduct a functional assessment at the school setting
Program generalization by collaborating with school staff to prompt and reinforce the skill there (Correct answer)
Increase the number of therapy sessions per week
Discontinue therapy and wait for natural generalization to occur

Correct answer: Program generalization by collaborating with school staff to prompt and reinforce the skill there

Actively programming generalization by working with school staff to prompt and reinforce the skill in that setting is the most direct and appropriate intervention.

Question 112: Which of the following is a key advantage of permanent product recording?

The observer does not need to be present when the behavior occurs (Correct answer)
It eliminates the need for an operational definition of the behavior
It is ideal for behaviors that leave no lasting physical trace
It captures the exact topography of each behavioral episode

Correct answer: The observer does not need to be present when the behavior occurs

Because permanent products persist after the behavior ends, an observer can evaluate them at any convenient time without needing to witness the behavior directly.

Question 113: The Early Start Denver Model (ESDM) is designed primarily for children in which age range?

5 to 10 years
12 to 48 months (Correct answer)
Birth to 6 months
Adolescents and adults

Correct answer: 12 to 48 months

ESDM is an evidence-based early intervention for toddlers aged 12–48 months with ASD, combining ABA with developmental relationship-based approaches.

Question 114: To be effective, time-out from reinforcement requires that the environment from which the student is removed is:

Socially isolating
Highly aversive
Completely dark and quiet
Richly reinforcing (Correct answer)

Correct answer: Richly reinforcing

Time-out only functions as a punisher if the time-in environment is reinforcing; removing a student from a non-reinforcing environment is not time-out and will not reduce behavior.

Question 115: A behavior analyst working in a school district receives a request from a district administrator to share de-identified behavioral data from multiple students to help make a case for budget reallocation. The analyst believes the data aggregation could still allow re-identification of specific students given the small school size. Under BACB ethics, the analyst should PRIMARILY:

Refuse all data sharing with administrators under any circumstances
Evaluate whether de-identification is genuinely sufficient to protect confidentiality given the context, and decline or modify the request if re-identification risk remains (Correct answer)
Share the data since it has been de-identified and administrative use is generally permitted
Obtain written consent from one parent as a representative sample before sharing

Correct answer: Evaluate whether de-identification is genuinely sufficient to protect confidentiality given the context, and decline or modify the request if re-identification risk remains

De-identification is not a categorical pass for disclosure — the Ethics Code requires behavior analysts to consider whether de-identification is actually effective in context. In a small school, small-cell data can allow re-identification even without explicit identifiers. The analyst must assess the realistic confidentiality risk and refuse or substantially modify the request (e.g., further aggregation, suppression of small cells) if re-identification is plausible. Blanket refusal is too rigid, but unconditional sharing ignores the real risk. One consent form does not cover other students.

Question 116: During discrete trial training, a therapist provides a vocal prompt before the child has an opportunity to respond independently. Over several sessions, the child never responds without the prompt. This BEST illustrates which concept?

Motivating operation satiation
Stimulus overselectivity
Prompt dependency (Correct answer)
Extinction burst

Correct answer: Prompt dependency

When prompts are delivered prematurely or not systematically faded, learners can become prompt dependent — they wait for the prompt as a discriminative stimulus rather than responding to the natural SD. This is distinct from stimulus overselectivity, which involves responding to only a subset of a compound stimulus. Systematic prompt fading and transfer procedures are used to prevent and remediate prompt dependency.

Question 117: In a prompting sequence, 'prompt fading' refers to:

Increasing prompt intensity over trials
Adding new prompts when behavior deteriorates
Gradually removing prompts to transfer stimulus control to natural cues (Correct answer)
Delivering prompts on a fixed-ratio schedule

Correct answer: Gradually removing prompts to transfer stimulus control to natural cues

Prompt fading systematically reduces assistance over time so the learner responds to the natural SD without prompts.

Question 118: A BCBA working in a school district is pressured by an administrator to discontinue a client's behavior intervention plan (BIP) and transition the student to a purely consequence-based disciplinary approach used for general education students, citing budget constraints. The BCBA knows the student's IEP mandates the BIP and that removing it without a formal IEP team review violates federal education law. The administrator insists this is 'a school decision, not a clinical one.' The BCBA's most appropriate course of action is:

Comply with the administrator's direction and document that the decision was made by school administration, which transfers liability away from the BCBA.
Refuse to discontinue the BIP without proper IEP team authorization, inform the administrator that doing so would violate IDEA, document the conflict in writing, and escalate to the special education director or district legal counsel if necessary. (Correct answer)
Negotiate a modified version of the BIP that reduces cost while preserving some elements, implementing it without a formal IEP team meeting to expedite the transition.
Pause implementation of the BIP temporarily while seeking guidance, as a brief pause avoids insubordination while the conflict is being resolved.

Correct answer: Refuse to discontinue the BIP without proper IEP team authorization, inform the administrator that doing so would violate IDEA, document the conflict in writing, and escalate to the special education director or district legal counsel if necessary.

A BIP embedded in an IEP is a legally binding document under IDEA. Discontinuing it without a formal IEP team meeting is a violation of federal law, not merely an administrative preference. The BCBA has independent ethical and legal obligations that cannot be nullified by an administrator's unilateral directive. Documenting the refusal and escalating through appropriate legal and administrative channels is the correct response. 'Pausing' implementation still removes the mandated support and exposes the client to harm and the district to legal liability.

Question 119: In ABA, 'treatment integrity' (also called procedural fidelity) refers to:

The degree to which an intervention is implemented as originally designed (Correct answer)
The social validity and acceptability of the intervention to stakeholders
The extent to which behavior change generalizes to natural settings
The effectiveness of the intervention in producing behavior change

Correct answer: The degree to which an intervention is implemented as originally designed

Treatment integrity measures how accurately and consistently the intervention procedures are carried out by the implementer.

Question 120: A BCBA is using a simultaneous prompting procedure to teach a vocational skill. A key feature that distinguishes simultaneous prompting from other prompt systems is that:

The controlling prompt and discriminative stimulus are presented simultaneously, replacing the need for any probe sessions because errors are impossible under this design
The controlling prompt is delivered simultaneously with the discriminative stimulus on every instructional trial, and probe trials without the prompt are conducted separately to assess stimulus control transfer (Correct answer)
The discriminative stimulus and a gestural prompt are always paired simultaneously, with the gestural prompt faded across sessions based on a predetermined schedule
A hierarchy of prompts is delivered simultaneously at the start of each session, and the least intrusive effective prompt is identified through a within-session assessment

Correct answer: The controlling prompt is delivered simultaneously with the discriminative stimulus on every instructional trial, and probe trials without the prompt are conducted separately to assess stimulus control transfer

Simultaneous prompting presents the controlling prompt at the same moment as the discriminative stimulus on every instructional trial, minimizing errors during instruction. However, probe trials — conducted separately from instructional trials, without any prompt — are essential to assess whether stimulus control has transferred to the discriminative stimulus alone. This separates it from constant time delay (which uses a 0-second delay rather than a truly simultaneous presentation evaluated through probes) and from prompt hierarchies, which vary prompt level based on responding.

Question 121: A practitioner implements extinction for self-injurious behavior maintained by automatic (sensory) reinforcement. The appropriate extinction procedure in this case is:

Sensory extinction (blocking sensory feedback) (Correct answer)
Time-out from reinforcement
Response cost
Planned ignoring

Correct answer: Sensory extinction (blocking sensory feedback)

Sensory extinction involves blocking or masking the sensory consequence that reinforces the behavior, such as using protective equipment to prevent the automatic reinforcement.

Question 122: An intraverbal is a verbal operant in which:

The behavior is under the control of a non-verbal antecedent stimulus
The verbal response is evoked by a prior verbal stimulus without point-to-point correspondence (Correct answer)
The learner repeats what another person has said
A verbal response is controlled by a motivating operation

Correct answer: The verbal response is evoked by a prior verbal stimulus without point-to-point correspondence

An intraverbal is produced in response to another's verbal stimulus, but the response does not match (repeat) the prior verbal behavior — it's a fill-in or conversational response.

Question 123: In ABA-based early intervention for ASD, which approach most closely mirrors natural developmental sequences by embedding learning in child-led play?

Functional Communication Training (FCT)
Contingency contracting
Discrete Trial Training (DTT)
Naturalistic Developmental Behavioral Interventions (NDBIs) (Correct answer)

Correct answer: Naturalistic Developmental Behavioral Interventions (NDBIs)

NDBIs (e.g., ESDM, JASPER, PRT) combine developmental science and ABA principles, embedding teaching within natural, child-initiated interactions.

Question 124: Latency recording measures:

The number of times a behavior occurs within an observation period
The elapsed time from the onset of a stimulus to the initiation of the behavior (Correct answer)
The total time a behavior lasts from its onset to its offset
The time between the end of one response and the beginning of the next response

Correct answer: The elapsed time from the onset of a stimulus to the initiation of the behavior

Latency is the time elapsed from the presentation of the discriminative stimulus to the beginning of the behavioral response.

Question 125: Which of the following BEST describes a 'duplic' verbal operant?

An intraverbal chain linking multiple verbal responses
A verbal operant category including echoic, copying-a-text, and transcription where point-to-point correspondence exists (Correct answer)
A mand directed at a specific audience
A verbal response evoked by a nonverbal discriminative stimulus

Correct answer: A verbal operant category including echoic, copying-a-text, and transcription where point-to-point correspondence exists

Duplic is the superordinate class of verbal operants (echoic, copying-a-text, transcription) that share point-to-point correspondence between stimulus and response.

Question 126: Interobserver agreement (IOA) is best described as:

The degree to which two or more independent observers record the same data simultaneously (Correct answer)
The agreement between a behavior analyst and the client's family
The consistency of a single observer across multiple sessions
The reliability of a measurement instrument over time

Correct answer: The degree to which two or more independent observers record the same data simultaneously

IOA assesses measurement reliability by comparing data collected independently by two observers at the same time.

Question 127: If a BCBA discovers that a colleague is engaging in conduct that may harm a client, the appropriate first step is to:

Address the concern informally with the colleague if it does not pose immediate client risk, escalating if unresolved (Correct answer)
Report immediately to the BACB without attempting to resolve it informally
Ignore it to avoid professional conflict
Confront the colleague directly and aggressively

Correct answer: Address the concern informally with the colleague if it does not pose immediate client risk, escalating if unresolved

The BACB Ethics Code advises attempting informal resolution first (if no immediate risk) before formal reporting, escalating if the concern is not resolved.

Question 128: Every time a green card is presented, a student is reinforced for touching their nose. When a red card is presented, they are not reinforced. Over time, the student reliably touches their nose only when the green card is shown. The green card has become a(n):

Unconditioned reinforcer
Extinction burst
Negative punisher
Discriminative stimulus (SD) (Correct answer)

Correct answer: Discriminative stimulus (SD)

A discriminative stimulus (SD) is a stimulus in the presence of which a particular response will be reinforced. The green card signals that reinforcement is available for touching the nose, thus it has gained stimulus control over that behavior.

Question 129: Which of the following best describes the role of an establishing operation (EO) in a behavior intervention plan?

It describes the topography of the target behavior
It alters the effectiveness of a reinforcer and the current frequency of behavior it maintains (Correct answer)
It provides a consequence that increases future behavior
It identifies the function of behavior through observation

Correct answer: It alters the effectiveness of a reinforcer and the current frequency of behavior it maintains

An establishing operation (a type of motivating operation) temporarily increases the value of a reinforcer and the frequency of behaviors that have produced that reinforcer in the past.

Question 130: A researcher is evaluating the experimental control of an ABAB reversal design. During the second B phase, the target behavior does NOT return to B-phase levels—it instead remains near the A-phase (baseline) level. Assuming no procedural drift, this outcome MOST likely indicates:

A floor effect where the behavior cannot decrease further, invalidating the reversal phase
An irreversibility problem caused by learning or habit formation, which undermines the internal validity of the design for this behavior (Correct answer)
Successful generalization of the behavior to the natural environment making the intervention redundant
A type I error in the original A-to-B effect, suggesting the initial behavior change was coincidental

Correct answer: An irreversibility problem caused by learning or habit formation, which undermines the internal validity of the design for this behavior

When behavior fails to reverse during the return-to-baseline phase of an ABAB design, the most likely explanation (absent procedural error) is that irreversible learning or habit formation has occurred—the skill or behavior change is now maintained by naturally occurring contingencies or has become part of the learner's repertoire. This is a known limitation of reversal designs with behaviors that involve learning, and it compromises internal validity by preventing a demonstration of experimental control.

Question 131: A client's parent asks a BCBA to falsify an evaluation report to qualify the child for additional insurance-funded services. What must the BCBA do?

Decline; falsifying reports is fraudulent and violates the Ethics Code regardless of the reason (Correct answer)
Agree if a licensed psychologist co-signs the report
Comply if the parent signs a waiver accepting responsibility
Consult with the insurance company first before deciding

Correct answer: Decline; falsifying reports is fraudulent and violates the Ethics Code regardless of the reason

Falsifying records or reports constitutes fraud and a serious ethics violation; behavior analysts must refuse such requests and may need to document the refusal.

Board Certified Assistant Behavior Analyst (BCaBA) Exam

The BCaBA exam certifies individuals who provide behavior-analytic services under the supervision of a Board Certified Behavior Analyst (BCBA).

130

Questions

240 min

Time Limit

70%

To Pass

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