Journal article
The relation of multiple-schedule behavioral contrast to deprivation, time in session, and within-session changes in responding
Animal learning & behavior, Vol.32(2), pp.190-201
05/2004
Handle:
https://hdl.handle.net/2376/112887
PMID: 15281391
Abstract
Pigeons’ keypecking was reinforced by food on baseline schedules of multiple variable interval (VI)x VIx and on contrast schedules of multiple VIx VIy. Deprivation of food was varied by maintaining subjects at 75%, 85%, and 95% (±2%) of their free-feeding weights. Positive and negative behavioral contrast were observed. The size of the contrast was not systematically altered by changes in deprivation. Positive and negative contrast were both larger later in the session than they were earlier. Withinsession decreases in responding were steeper for the baseline than for the contrast schedules for positive contrast. Within-session decreases were steeper for the contrast than for the baseline schedules for negative contrast. These results were predicted by the idea that different amounts of habituation to the reinforcer during the baseline and contrast schedules contribute to behavioral contrast. The results show that contrast occurs under conditions that reduce the effect of the following component. The results support the assumption that positive and negative contrast are produced by symmetrical theoretical variables.
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Details
- Title
- The relation of multiple-schedule behavioral contrast to deprivation, time in session, and within-session changes in responding
- Creators
- Frances McSweeney - Department of Psychology Washington State University 99164-4820 Pullman WASamantha Swindell - Department of Psychology Washington State University 99164-4820 Pullman WAEric Murphy - Department of Psychology Washington State University 99164-4820 Pullman WABenjamin Kowal - Department of Psychology Washington State University 99164-4820 Pullman WA
- Publication Details
- Animal learning & behavior, Vol.32(2), pp.190-201
- Academic Unit
- Arts and Sciences, College of; Psychology, Department of
- Publisher
- Springer-Verlag; New York
- Identifiers
- 99900547571001842
- Language
- English
- Resource Type
- Journal article