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Piaget emphasized that children move gradually from one stage to another,and frequently fluctuate among stages.
Variable-ratio
A reinforcement schedule in which a response is reinforced after an unpredictable number of responses, which tends to produce high rates of response.
Fixed-ratio
A reinforcement schedule in which a response is rewarded after a predetermined number of responses.
Variable-interval
A reinforcement timetable in which a response is reinforced following a random duration of time.
Variable-ratio Schedule
A reinforcement schedule where a response is reinforced after an unpredictable number of responses, making it highly resistant to extinction.
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