Describe the four schedules of reinforcement,give an example of each and describe its influence on performance.

The fixed interval schedule gives a reinforcer after a given period of time.An example would be a weekly paycheck.Fixed interval reinforcers lead to average performance.A fixed ratio schedule gives a reinforcer after a number of behaviors.An example would be a piece-rate system.Fixed ratio reinforcers lead to high and stable performance.A variable interval gives a reinforcer at random times.An example would be occasional praise from a manager.Variable interval leads to moderately high and stable performance.A variable ratio gives a reinforcer after a random number of behaviors.An example would be random quality checks with praise for zero defects.Variable ratio reinforcers lead to very high performance.