BEHAVIORAL INTERACTIONS AND STIMULUS CONTROL DURING CONDITIONAL DISCRIMINATIONS1

Two pigeons were exposed to factorial combinations of two values of line tilt and two frequencies of houselight flashes. During each of four baseline stages, key pecking in the presence of all four combinations was reinforced according to a variable‐interval schedule. The baseline phases were follow...

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Bibliographic Details
Published inJournal of the experimental analysis of behavior Vol. 20; no. 3; pp. 483 - 487
Main Author Wilkie, Donald M.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.11.1973
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ISSN0022-5002
1938-3711
DOI10.1901/jeab.1973.20-483

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Summary:Two pigeons were exposed to factorial combinations of two values of line tilt and two frequencies of houselight flashes. During each of four baseline stages, key pecking in the presence of all four combinations was reinforced according to a variable‐interval schedule. The baseline phases were followed by four different conditional discrimination training procedures in which reinforcement availability for pecking in the presence of the line tilts depended upon the houselight frequency. The subjects acquired each conditional discrimination. Behavioral contrast occurred during the acquisition and abolition of the discriminations. Generalization tests, given after each conditional discrimination, revealed that both the line tilt and houselight frequency dimensions controlled pecking only after conditional discriminations in which reinforcement availability depended upon the value of both dimensions.
Bibliography:This research was supported by Grant 26‐9519 from the University of British Columbia Committee on Research and Grant A8353 from the National Research Council of Canada. D. Ramer assisted in conducting the experiment.
ISSN:0022-5002
1938-3711
DOI:10.1901/jeab.1973.20-483