What is Reinforcement that comes after a predetermined amount of time?

Reinforcement that occurs after a predetermined amount of time is known as "fixed-interval reinforcement." In this schedule, a reward is provided after a specific period, regardless of the number of responses made during that time. For example, a worker receiving a paycheck every two weeks is an example of fixed-interval reinforcement, as the reinforcement (paycheck) is delivered after a fixed period. This type of reinforcement can lead to a pattern of behavior where responses increase as the time for reinforcement approaches.