During a typical morning, Colin checks the clock frequently before being reinforced with confirmation that the time for his regularly scheduled break has arrived. In this case, Colin's behavior is reinforced on a schedule.

Fixed interval

Explanation: Fixed interval schedule is a reinforcement pattern in operant conditioning (adopts a reward called reinforcement or punishment to strengthen or suppress future occurrence of a certain response or behavior) whereby a behavior is reinforced or rewarded only after a fixed time interval. The interval between successive reinforcement is always the same. Behavior or response made before the fixed interval will not be reinforced or rewarded.

In the scenario above, Collins was only reinforced when the fixed interval was reached despite his behavior ( frequent checking of the clock).

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