Planned Activity Check (PLACHECK) is a variation of momentary time sampling used to measure group behaviorBehavior refers to any activity or action that living organ... in AppliedApplied means that the behaviors targeted for change in ABA... Behavior Analysis (ABA). In this method, an observer records the number of individuals engaged in a target behavior at specific intervals during a planned activity. It provides an estimate of group participation or engagement rather than individual behavior.
Example
A teacher uses PLACHECK to measure how many students are on-task during a group reading activity. Every 5 minutes, the teacher checks to see how many students are actively reading (the target behavior) and records the number of students engaged at that specific moment. If 8 out of 10 students are reading at the check, the teacher records that 80% of the students were engaged in the activity during that interval.