BACB Measurement and Data Collection

Question 1

Which measurement dimension records the number of times a behavior occurs within an observation period?

Accepted Answer

Frequency (count)

Answer

Frequency (count) is a fundamental measurement dimension that records how many times a discrete behavior occurs during an observation period.

Question 2

What measurement dimension captures the elapsed time from the onset of a behavior to its offset?

Accepted Answer

Duration

Answer

Duration measures how long a behavior lasts from its beginning to its end, appropriate for behaviors that have a clear start and stop.

Question 3

Which recording method involves observing and recording behavior during brief, equally spaced time intervals and noting whether the behavior occurred at all during each interval?

Accepted Answer

Partial-interval recording

Answer

Partial-interval recording scores an interval as positive if the target behavior occurred at any point during that interval, which tends to overestimate duration.

Question 4

Which time-sampling method records whether the behavior is occurring at the exact moment the interval ends?

Accepted Answer

Momentary time sampling

Answer

Momentary time sampling records behavior only at the precise end of each interval, making it less disruptive but less sensitive to brief behaviors.

Question 5

What is interobserver agreement (IOA), and why is it important in ABA research?

Accepted Answer

A measure of how closely two independent observers' data match, ensuring measurement reliability

Answer

IOA measures the degree to which two independent observers record the same data, providing evidence that the measurement system is reliable and objective.

BACB - Behavior Analyst Certification Board Practice Test

BACB - Behavior Analyst Certification Board Practice Test

BACB Measurement and Data Collection