VI– Used in teaching and proper use of reinforcers, variable interval is a way of describing a group of different time-based schedules of reinforcement. For example, the child’s first correct response will be reinforced after 5 minutes, then after 3 minutes, then after 4 minutes. These different intervals (5 minutes, 3 minutes, and 4 minutes) will be labeled as VI-3—the average of the sum of the three intervals. Behaviors on a VI schedule tend to produce uniform or stable response rates in which larger averages produces somewhat less behaviors.
April is Autism Awareness Month and an excellent opportunity to promote and draw attention to the tens of thousands facing an autism diagnosis each year. #lightitupblue
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