What type of estimate does whole interval recording provide regarding behavior?

Whole interval recording provides an estimate of behavior that tends to underrepresent the actual occurrence of the behavior during the observation period. This method requires the observer to only mark the behavior as occurring if it is observed for the entire duration of the interval. As a result, any instances where the behavior is present for only part of the interval will not be counted. This leads to a tendency to underestimate the frequency of the behavior since brief occurrences within the interval will not be captured, meaning that the recorded data may not reflect the true amount of behavior that occurred. Hence, whole interval recording is characterized by an underestimation of behavioral occurrences.