Interval reinforcement

Interval reinforcement is a group of reinforcement schedules used in learning research. In these schedules the timing of reinforcement is systematically altered to explore is effects upon behavior.


 * Fixed interval schedule(FI) - reinforcement of the first response after a fixed time interval has passed since the previous reinforcement (maintaining a fixed interval between reinforcers)
 * Variable interval schedule(VI) - reinforcement of the first response after a variable time interval has passed since the previous reinforcement; the schedule is characterised by the mean interval occurring between reinforcements, e.g. VI 30 seconds.