Momentary time sampling records a behavior based on its occurrence at:

Momentary time sampling is a method used to assess the presence or absence of a behavior at a specific point in time during a predetermined observation interval. The approach involves observing whether the behavior occurs at the very end of that interval. This provides a snapshot of the behavior, allowing for data collection that reflects only if the target behavior is occurring at that exact moment. The technique is particularly useful for behaviors that may not occur frequently, as it allows for efficient data collection without the need for continuous observation.

This method contrasts with other data collection strategies, which may record behaviors based on different timeframes or conditions, such as during the entire interval or at random intervals. In summary, the essence of momentary time sampling is its focus on capturing behavior at an exact moment, specifically the end of the interval, which is what makes it a distinct and effective measurement tool in behavioral assessment.