AVERSIVE PROPERTIES OF NEGATIVE STIMULUS IN A SUCCESSIVE DISCRIMINATION

被引:57
作者
RILLING, M
ASKEW, HR
AHLSKOG, JE
KRAMER, TJ
机构
[1] Princeton University, Princeton, New Jersey
关键词
D O I
10.1901/jeab.1969.12-917
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
Experiment I sought to determine if the stimulus correlated with extinction in a successive discrimination was an aversive stimulus. An escape response provided an index of aversive control. Two groups of pigeons were exposed to a multiple variable‐interval 30‐sec extinction schedule. For the experimental group, a single peck on a second key produced a timeout during which all lights in the chamber were dark. For the control group, pecks on the second key had no contingency. The rate of responding on the timeout key during extinction for the experimental group was higher than that of the control group during all sessions of discrimination training except the first. In Exp. II, green was correlated with variable interval 30‐sec and red was correlated with variable‐interval 5‐min. Timeouts were obtained from variable‐interval 5‐min. There were more timeouts from extinction in Exp. I than from variable‐interval 5‐min in Exp. II. Experiment III showed that not presenting the positive stimulus reduced the number of timeouts from the negative stimulus for the two birds from Exp. I that had the highest rate of timeouts from extinction, but had little effect on the two birds that had the lowest rate of timeouts. These results suggest that in a multiple schedule, the stimulus correlated with extinction, or the lower response rate, functions as a conditioned aversive stimulus. Explanations of the timeout response in terms of extinction produced variability, displaced aggression, and stimulus change, were considered but found inadequate. 1969 Society for the Experimental Analysis of Behavior
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页码:917 / &
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