Which observational recording method involves noting the total length of a behavior's occurrence?

The method that involves noting the total length of a behavior’s occurrence is duration recording. This approach allows the observer to track how long a specific behavior lasts during a given observation period. By measuring the duration, therapists can gain insights into the intensity or persistence of the behavior, which is crucial for evaluating progress, effectiveness of interventions, or planning future strategies.

In contrast, a frequency count focuses on the number of times a behavior occurs within a set timeframe rather than how long it lasts, which is different from the focus of duration recording. A cue refers to a prompt or stimulus that elicits a behavior, while baseline pertains to the measurement of behavior prior to the introduction of an intervention, serving as a comparison to evaluate changes post-intervention. Therefore, duration recording specifically addresses the total time a behavior is exhibited, making it the correct answer in this context.