Current Search: Brightness perception (x)
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Title
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TRANSPOSITION: A FURTHER TEST OF ABSOLUTE VERSUS RELATIONAL PREDICTIONS.
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Creator
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BIZAILLON, PAUL DUNN., Florida Atlantic University, Adamson, Robert E.
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Abstract/Description
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An attempt was made to investigate the intradimensional transfer of a simultaneously presented, double brightness discrimination in male hooded rats. It was hypothesized that in a paradigm designed to emphasize interstimulus cues over individual stimulus cues, subjects would exhibit transposition in testing, even when this involved approaching a previously negative stimulus, and avoiding a previously positive stimulus, under extinction conditions. Results of two tests (with a partial...
Show moreAn attempt was made to investigate the intradimensional transfer of a simultaneously presented, double brightness discrimination in male hooded rats. It was hypothesized that in a paradigm designed to emphasize interstimulus cues over individual stimulus cues, subjects would exhibit transposition in testing, even when this involved approaching a previously negative stimulus, and avoiding a previously positive stimulus, under extinction conditions. Results of two tests (with a partial reinforcement retraining session between them) indicated significant transposition on all measures except trial of first choice on Test I for the group trained to approach the brighter stimulus in any pair presented. Results were interpreted as being in support of relational theory which stresses the importance of dimensional salience in the establishment of relational responding.
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Date Issued
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1975
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PURL
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http://purl.flvc.org/fcla/dt/13749
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Subject Headings
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Brightness perception, Discrimination learning
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Format
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Document (PDF)
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Title
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CONTRAST EFFECTS IN THE ACQUISITION OF A BRIGHTNESS DISCRIMINATION.
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Creator
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MOORE, JOHN NICHOLAS, Florida Atlantic University
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Abstract/Description
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An attempt was made to determine the effects of successive shifts in the quality of a reinforcing agent upon the acquisition of a brightness discrimination. Two levels of sucrose concentration (4 and 32%) were combined factorially during preadaptation and discrimination phases. Dependent measures included response rate and the number of errors made during discrimination acquisition. Results indicated non-significant negative contrast effects in errors and, in addition, negative contrast and...
Show moreAn attempt was made to determine the effects of successive shifts in the quality of a reinforcing agent upon the acquisition of a brightness discrimination. Two levels of sucrose concentration (4 and 32%) were combined factorially during preadaptation and discrimination phases. Dependent measures included response rate and the number of errors made during discrimination acquisition. Results indicated non-significant negative contrast effects in errors and, in addition, negative contrast and amount of reward effects in terms of response rate. It was hypothesized that the absence of amount of reward effects in errors and positive contrast in both dependent measures was a function of a partial between groups design and ceiling effects respectively.
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Date Issued
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1974
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PURL
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http://purl.flvc.org/fcla/dt/13669
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Subject Headings
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Discrimination learning, Brightness perception, Reward (Psychology)
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Format
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Document (PDF)
