Which measurement procedure records whether the behavior occurred at any time during the interval?

• A. Whole Interval
• B. Partial Interval
• C. Momentary Time Sample
• D. Interresponse Time

Answer: (B)

Partial interval recording captures whether the behavior happened at least once during the interval. Each interval gets a yes if the behavior occurs at any moment within it, even briefly. This is different from whole interval recording, which requires the behavior to occur for the entire interval to count; momentary time sampling checks the behavior only at specific moments (often at the end of the interval); and interresponse time measures the gap between successive occurrences, not whether anything happened during the interval. Because partial interval only needs a single occurrence within the interval, it tends to overestimate how much time the behavior is present, but it’s a straightforward way to flag any instance of the behavior within each interval.