Partial Interval
Recording the presence or absence of a behavior during a brief interval of time. Intervals are marked as “+” if the target behavior occurred at any time during
the interval. Intervals are marked as “-” if the target behavior did not occur during the entire interval. Partial Interval data collection overestimates the occurrence of behavior. Examples of behaviors that are appropriate for partial interval recording are vocal stereotypy, hand flapping, biting nails.