Simultaneous Generalization Gradients for Appetitive and Aversive Behavior

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Science  09 Dec 1960:
Vol. 132, Issue 3441, pp. 1769-1770
DOI: 10.1126/science.132.3441.1769


In the presence of a bright light five monkeys were trained to press a lever to avoid shock and to pull a chain for food reward. When tested with a series of lights dimmer than the conditioning stimulus, the monkeys showed a sharp gradient of effect for the rewarded response, in contrast to a very flat gradient for the avoidance response.