ABAT Data Collection and Analysis 4 — Questions and Answers
Question 1: A behavior analyst is measuring the number of times a client bites their nails during a 30-minute session. Which data collection method is most appropriate?
- Duration recording
- Frequency recording (Correct answer)
- Latency recording
- Momentary time sampling
Correct answer: Frequency recording
Frequency recording counts the number of discrete occurrences of a behavior, making it ideal for countable behaviors like nail biting.
Question 2: Which of the following best describes 'inter-observer agreement' (IOA)?
- The consistency of data collected by one observer across multiple sessions
- The degree to which two independent observers record the same data (Correct answer)
- The agreement between a clinician's prediction and actual behavior outcomes
- The match between baseline data and intervention phase data
Correct answer: The degree to which two independent observers record the same data
IOA measures the consistency between two independent observers recording the same behavior, used to assess data reliability.
Question 3: A graph shows a descending trend during intervention for a target behavior that should be decreasing. This pattern indicates:
- Intervention is ineffective and should be changed
- Intervention is producing the desired therapeutic effect (Correct answer)
- Baseline data collection should be restarted
- The behavior is in the extinction burst phase
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 4: What is the primary advantage of using a cumulative record over a standard frequency graph?
- It shows variability more clearly
- It reveals the total accumulated responses and response rate over time (Correct answer)
- It is easier to calculate IOA from
- It automatically controls for session length differences
Correct answer: It reveals the total accumulated responses and response rate over time
A cumulative record displays the running total of responses, making it easy to identify the rate of responding through the slope of the line.
Question 5: During a whole-interval recording session, an observer records '+' only if the behavior occurs:
- At least once during the interval
- For the entire duration of the interval (Correct answer)
- At the moment the interval ends
- More than three times within the interval
Correct answer: For the entire duration of the interval
Whole-interval recording requires the behavior to occur throughout the entire interval for a positive score, which tends to underestimate behavior.
Question 6: A behavior analyst notices an outlier data point that is dramatically higher than surrounding points. The best course of action is to:
- Delete the data point before graphing
- Note it on the graph and investigate potential causes (Correct answer)
- Recalculate the mean excluding that point
- Immediately change the intervention
Correct answer: Note it on the graph and investigate potential causes
Outliers should be retained in the data and flagged with a note so the analyst can investigate whether procedural, environmental, or other factors explain the deviation.
Question 7: Which measurement dimension is most appropriate when the primary concern is how quickly a client begins a task after an instruction is given?
- Frequency
- Duration
- Latency (Correct answer)
- Interresponse time
Correct answer: Latency
Latency measures the elapsed time between the onset of a stimulus and the beginning of a response, capturing how quickly a behavior is initiated.
ABAT Data Collection and Analysis 4
A behavior analyst is measuring the number of times a client bites their nails during a 30-minute session.
Which data collection method is most appropriate?