What does a fixed-interval schedule represent?

A fixed-interval schedule is a type of reinforcement schedule in which reinforcement is provided after a specific amount of time has passed, assuming the desired behavior has occurred at least once during that interval. This means that, regardless of how many responses occur, the reinforcement will only be delivered once the predetermined time period has elapsed.

For example, if a person is paid every two weeks, that payment serves as reinforcement for their work during that interval. The key characteristic of this schedule is the fixed nature of the time period—hence the term "fixed-interval." This results in a pattern where responses may increase as the time for reinforcement approaches but may decrease immediately after the reinforcement is provided.

Understanding this concept is crucial in various applications, such as in educational settings or behavioral therapy, where timing of reinforcement can significantly influence learning and behavior management.