Then, a specified behavior is then recorded a maximum of once per interval throughout the observation period, regardless of how many times the behavior might occur. Behavior recorded in this way is typically graphed in terms of the percentage of observation intervals in which it is observed. Observe for 10 seconds, and then Record for 10 seconds, for a total period of time, such as 1 hour. Picture prompts are sometimes useful for helping observers to identify variations in the topography of a response. Commonly measured in terms of frequency and duration.
Counters can help take frequency measures.
The duration of behavior is the length of time that it lasts. In dealing with behavior such as tantruming, we may be more interested in its duration. Avoids difficulties with identifying each scream, kick, fall to floor, etc., as a separate tantrum. Timers can be used to help facilitate duration data collection. The intensity or force of a response.