What does Fixed Interval reinforcement refer to?

Fixed Interval reinforcement refers to a schedule of reinforcement where a response is rewarded only after a specified amount of time has passed. This reinforces behaviors by creating a predictable pattern for when reinforcement will occur, which in turn can influence the frequency and timing of the responses. For example, a teacher may give a quiz every week; students know that they will receive feedback (reinforcement) after this fixed interval of one week.

This concept is significant in understanding how timing influences behavior; individuals tend to increase their responses as the time for reinforcement approaches, a phenomenon known as "scalloped" responding, where the rate of response accelerates as the reinforcer becomes imminent. Understanding this helps practitioners design effective behavior modification programs, as they can set intervals that optimize learning and reinforcement for desired behaviors.