Positive and negative successive contrast effects following multiple shifts in reward magnitude under high drive and immediate reinforcement |
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| Authors: | Frederick R Maxwell Richard S Calef D W Murray J C Shepard R A Norville |
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| Institution: | 1. Southwest Missouri State University, 65802, Springfield, Missouri
2. West Virginia Wesleyan College, 26201, Buckhannon, West Virginia
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| Abstract: | Multiple shifts in reward amount were given to rats in a straight runway. Both positive and negative contrast effects were observed. A positive contrast effect was observed, however, only if the shift from small to large reward occurred while the subject was evidencing a negative contrast effect. Implications for current conceptions of reinforcement contrast are discussed. |
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