Interval reinforcement

The trainer reinforces according to a time schedule. In a fixed intervalFixed interval A schedule of reinforcement in which the trainer reinforces a desired behavior after a specific period of time—for example, every minute.  , the trainer reinforces the desired response after a specific period of time—for example, every minute. In avariable intervalVariable interval Variable interval A schedule of reinforcement in which the trainer reinforces desired behavior after varying periods of time within a certain timeframe.  , the trainer reinforces after varying periods of time within a certain timeframe.