Which schedule of reinforcement is characterized by rewards being given after a set number of responses?

A fixed ratio schedule is characterized by delivering rewards after a specified number of responses. In this type of reinforcement schedule, individuals are reinforced after completing a predetermined number of tasks or actions. For example, if a worker is paid after completing every 10 products, they are on a fixed ratio schedule. This approach is effective as it encourages employees to increase their output, knowing that their efforts will lead to rewards once they've completed enough work.

In contrast, a variable interval schedule would involve rewards given after varying amounts of time, which is not linked to the number of responses. Intermittent reinforcement is a broader category that includes various types of reinforcement schedules, but it does not specifically refer to the set number of responses as the fixed ratio does. Job enrichment, on the other hand, relates to enhancing a job's content to increase motivation and satisfaction, which does not directly pertain to reinforcement schedules. Thus, the specific nature of the fixed ratio schedule makes it the correct answer in this context.