Measurement and Data Collection Flashcards

Rate of behavior is calculated as:

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.

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

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.

Inter-response time (IRT) measures:

Answer: The elapsed time between the offset of one response and the onset of the next

IRT is the gap between the end of one response and the beginning of the next response of the same type.

Latency recording is most clinically useful for measuring:

Answer: How quickly a student initiates a task after an instruction is delivered

Latency measures the interval from the delivery of a discriminative stimulus (e.g., a direction) to the onset of the response.

A behavior analyst selects magnitude as the primary measurement dimension. This is most appropriate when:

Answer: The intensity, force, or size of the behavior is what matters most

Magnitude quantifies the intensity, force, or extent of a behavior episode and is chosen when these qualities are more clinically meaningful than count or duration.

Percentage of intervals is calculated from interval recording data by:

Answer: Dividing intervals with behavior recorded by total intervals, multiplied by 100

Percentage of intervals = (number of intervals scored as occurrence ÷ total intervals observed) × 100.

A practitioner wants to know the total amount of time per session a student spends on-task across multiple separate episodes. Which measurement dimension is most appropriate?

Answer: Cumulative duration

Cumulative duration sums the lengths of all individual episodes within a session to yield the total time the behavior occurred.