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Discrimination Learning and Inhibition
H. S. Terrace
New Series, Vol. 154, No. 3757 (Dec. 30, 1966), pp. 1677-1680
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/1720840
Page Count: 4
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Pigeons learned to discriminate between a white vertical line on a dark background (S+) and a monochromatic circle of light (S-) either with or without responses to S-(errors). Gradients of inhibition, which were centered around S-, and which had greater than zero slopes, were obtained only from those subjects who learned to discriminate with errors. The results indicate that the occurrence of errors is a necessary condition for S- to function as an inhibitory stimulus. This finding is consistent with other performance differences in subjects who have learned to discriminate with and without errors.
Science © 1966 American Association for the Advancement of Science