Repeated successive contrast in consummatory behavior with repeated shifts in sucrose concentration
| Autor: | Howard C. Becker, Susan Checke, Charles F. Flaherty |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
Sucrose
Contrast effect media_common.quotation_subject Experimental and Cognitive Psychology Developmental psychology Behavioral Neuroscience chemistry.chemical_compound Neuropsychology and Physiological Psychology Negative contrast Animal science chemistry Positive contrast Contrast (vision) Animal Science and Zoology Licking Psychology Reinforcement General Psychology media_common |
| Zdroj: | Animal Learning & Behavior. 11:407-414 |
| ISSN: | 1532-5830 0090-4996 |
| DOI: | 10.3758/bf03199795 |
| Popis: | Contrast in consummatory behavior was investigated following repeated shifts from 32% to 4% sucrose. In Experiment 1, contrast in licking and in open-field measures of activity occurred following the second and third downshifts. In Experiments 2a and 2b, equivalent contrast effects occurred following the first and second downshifts in sucrose. In Experiment 3, negative contrast remained unabated following nine downshifts in animals shifted between 32% and 4% sucrose on alternate days. Similar results were found for five downshifts in animals shifted every 2 days. In both of these latter conditions, positive contrast occurred over the first few shifts and was then lost as the 32% control group reached asymptote. These data show that repeated negative contrast effects in consummatory behavior are robust and enduring and occur under several different sets of experimental parameters. The results are discussed in terms of reinforcement level and emotional interpretations of contrast effects, and the possibility was suggested that the causal mechanism of contrast changes with repeated shifts. |
| Databáze: | OpenAIRE |
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