What is the defining feature of an intermittent schedule of reinforcement?

The defining feature of an intermittent schedule of reinforcement is that some responses are reinforced, rather than all responses receiving reinforcement. This type of schedule means that reinforcement is delivered only after certain responses, which can vary based on the specific intermittent schedule used, such as variable ratio, variable interval, fixed ratio, or fixed interval schedules. This method can effectively maintain target behaviors over longer periods because it creates unpredictability in reinforcement, which can increase the persistence of behavior. It contrasts with continuous reinforcement, where every response earns reinforcement. Therefore, the characteristic of reinforcing only some responses is what distinguishes intermittent schedules and makes them a powerful tool in behavior management and learning.