Percent of Occurrence

Percent of Occurrence is a data measurement method used in AppliedApplied means that the behaviors targeted for change in ABA... BehaviorBehavior refers to any activity or action that living organ... Analysis (ABA) to express the number of times a behavior occurred, relative to the total number of opportunities, as a percentage. This method is useful when you want to assess how often a behavior occurs compared to how many chances the individual had to engage in that behavior.

Formula:

Percent of Occurrence=(Number of times behavior occurredTotal opportunities)×100\text{Percent of Occurrence} = \left( \frac{\text{Number of times behavior occurred}}{\text{Total opportunities}} \right) \times 100Percent of Occurrence=(Total opportunitiesNumber of times behavior occurred​)×100

Example:

A teacher gives a student 10 opportunities to answer questions during class. The student answers correctly 7 times. To calculate the percent of occurrence:

Percent of Occurrence=(710)×100=70%\text{Percent of Occurrence} = \left( \frac{7}{10} \right) \times 100 = 70\%Percent of Occurrence=(107​)×100=70%

This means the student correctly answered the questions 70% of the time.