Time spent engaged in the target behavior during an observation window is best described as which measure?

• A. Duration
• B. Frequency
• C. Latency
• D. Permanent product recording procedures

Answer: (A)

Measuring how long a behavior lasts within an observation window is duration. This captures the total time the behavior is occurring from start to finish inside that window, showing how much of the period the behavior occupies. It differs from counting how many times the behavior happens—that would be frequency. Latency focuses on the delay from a cue to the first onset of the behavior, not on overall time spent. Permanent product recording looks at tangible outcomes produced by the behavior, not the time engaged in the behavior itself. So, the time spent engaged during the window is best described as duration.