A variable ratio reinforcement schedule occurs when a reinforcement is introduced after the desired behavior has occurred a fixed number of times.

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A variable ratio reinforcement schedule occurs when reinforcement is introduced after a variable, unpredictable number of occurrences of the desired behavior. It is a type of intermittent reinforcement schedule that is known to be highly effective in maintaining behaviors for long periods of time.

A Variable Ratio Reinforcement Schedule Occurs When a Reinforcement Is