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The present study was concerned with the effects of schedules of reinforcement upon the rate of verbal responding to written material in children. Four multiple schedules were used; multiple CRF-EXT, multiple CRF-VR, multiple CRF-VI, and multiple VR-VI, one subject being run on each schedule. Rates under CRF were lower than under VR, and somewhat higher than under VI, and much higher than under extinction. The subject run on multiple VR-VI showed little rate difference in the two components.

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