In a fixed ratio reinforcement schedule, when is the response reinforced?

In a fixed ratio reinforcement schedule, reinforcement occurs only after a predetermined number of responses have been made. This means that the reinforcer is delivered consistently once the set number of responses is achieved, which creates a predictable pattern for the individual. For example, if a fixed ratio schedule is set at five, the subject must complete five responses before receiving a reward. This type of schedule is effective in maintaining a high rate of responding, as individuals quickly learn the number of responses required to obtain reinforcement. The consistency of reinforcement after a specific quantity of behavior encourages the learner to repeat the behavior to achieve the same outcome.