Whole Interval Recording

Whole Interval Recording is a data collection method used to observe whether a behavior occurs throughout an entire predetermined interval. If the behavior is present for the entire interval, it is marked as occurring; if the behavior occurs only for part of the interval or not at all, it is marked as absent. This method often underestimates the total duration of behavior.

Example

A teacher observes a student during a 10-second interval to determine if the student stays seated for the entire time. If the student remains seated for the whole 10 seconds, the behavior is recorded as occurring. If the student stands up or moves before the 10 seconds are over, the behavior is not recorded as present.

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