CONTRAST AND STIMULUS GENERALIZATION FOLLOWING PROLONGED DISCRIMINATION TRAINING1
Different groups of pigeons received discrimination training in which the reinforcement‐associated and extinction‐associated stimuli were respectively either (a) a line tilt vs a blank key, (b) a blank key vs a line tilt, or (c) two different line tilts. The high response rates that developed to the...
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Published in | Journal of the experimental analysis of behavior Vol. 15; no. 3; pp. 355 - 363 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Blackwell Publishing Ltd
01.05.1971
|
Online Access | Get full text |
ISSN | 0022-5002 1938-3711 1938-3711 |
DOI | 10.1901/jeab.1971.15-355 |
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Abstract | Different groups of pigeons received discrimination training in which the reinforcement‐associated and extinction‐associated stimuli were respectively either (a) a line tilt vs a blank key, (b) a blank key vs a line tilt, or (c) two different line tilts. The high response rates that developed to the positive stimulus in all groups during discrimination learning were maintained over 64 sessions of training. After these sessions, all subjects were tested for stimulus generalization along the line‐tilt dimension. Gradients of relative (per cent) generalization around the stimulus associated with reinforcement (so‐called excitatory gradients) and around the stimulus associated with extinction (so‐called inhibitory gradients) were as steep as they typically are after much briefer training periods. These results do not support several of Terrace's predictions on the basis of the hypothesis that emotional responses develop to the stimulus associated with extinction during discrimination learning with errors, but eventually dissipate after extended training. |
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AbstractList | Different groups of pigeons received discrimination training in which the reinforcement‐associated and extinction‐associated stimuli were respectively either (a) a line tilt vs a blank key, (b) a blank key vs a line tilt, or (c) two different line tilts. The high response rates that developed to the positive stimulus in all groups during discrimination learning were maintained over 64 sessions of training. After these sessions, all subjects were tested for stimulus generalization along the line‐tilt dimension. Gradients of relative (per cent) generalization around the stimulus associated with reinforcement (so‐called excitatory gradients) and around the stimulus associated with extinction (so‐called inhibitory gradients) were as steep as they typically are after much briefer training periods. These results do not support several of Terrace's predictions on the basis of the hypothesis that emotional responses develop to the stimulus associated with extinction during discrimination learning with errors, but eventually dissipate after extended training. |
Author | Hearst, Eliot |
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Copyright | 1971 Society for the Experimental Analysis of Behavior |
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Notes | The research connected with this article was supported mainly by NIMH Grant MH 12120. I thank Minnie Koresko, Leigh Shallenberger, and Carol Bergfeld for advice and assistance. |
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References | 1966; 154 1961; 4 1966; 9 1969; 12 1970; 77 1967; 156 1968; 162 1970; 84 1970 1969 1968; 11 1968; 66 1970; 14 1966 |
References_xml | – start-page: 271 year: 1966 end-page: 344 – volume: 12 start-page: 917 year: 1969 end-page: 932 article-title: Aversive properties of the negative stimulus in a successive discrimination publication-title: Journal of the Experimental Analysis of Behavior – volume: 11 start-page: 743 year: 1968 end-page: 752 article-title: Generalization gradients of inhibition after different amounts of training publication-title: Journal of the Experimental Analysis of Behavior – start-page: 1 year: 1969 end-page: 41 – volume: 162 start-page: 1303 year: 1968 end-page: 1306 article-title: Discrimination learning as the summation of excitation and inhibition publication-title: Science – volume: 4 start-page: 57 year: 1961 end-page: 71 article-title: Behavioral contrast publication-title: Journal of the Experimental Analysis of Behavior – year: 1970 – volume: 14 start-page: 373 year: 1970 end-page: 409 article-title: Inhibition and the stimulus control of operant behavior publication-title: Journal of the Experimental Analysis of Behavior – volume: 84 start-page: 58 year: 1970 end-page: 63 article-title: Effects of context on the postdiscrimination gradient of stimulus generalization publication-title: Journal of Experimental Psychology – volume: 9 start-page: 613 year: 1966 end-page: 617 article-title: Behavioral contrast and the peak shift: effects of extended discrimination training publication-title: Journal of the Experimental Analysis of Behavior – volume: 77 start-page: 255 year: 1970 end-page: 256 article-title: Continuity theory revisited: a failure in a basic assumption publication-title: Psychological Review – volume: 66 start-page: 133 year: 1968 end-page: 138 article-title: Stimulus generalization and the amount of prior training on variable interval reinforcement publication-title: Journal of Comparative and Physiological Psychology – volume: 154 start-page: 1677 year: 1966 end-page: 1680 article-title: Discrimination learning and inhibition publication-title: Science – volume: 156 start-page: 988 year: 1967 end-page: 989 article-title: Reply to Deutsch publication-title: Science |
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Title | CONTRAST AND STIMULUS GENERALIZATION FOLLOWING PROLONGED DISCRIMINATION TRAINING1 |
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