Discriminative stimuli that follow the absence of reinforcement are preferred by pigeons over those that follow reinforcement |
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| Authors: | Andrea?M?Friedrich Tricia?S?Clement Email author" target="_blank">Thomas?R?ZentallEmail author |
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| Institution: | University of Kentucky, Lexington, Kentucky 40506-0044, USA. |
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| Abstract: | Clement, Feltus, Kaiser, and Zentall (2000) found that when pigeons have to work to obtain a discriminative stimulus that
is followed by reinforcement, they prefer a discriminative stimulus that requires greater effort over one that requires less
effort. The authors suggested that such a preference results from the greater change in hedonic value that occurs between
the more aversive event and the onset of the stimulus that signals reinforcement, a contrast effect. It was hypothesized that
any stimulus that follows a relatively more aversive event would be preferred over a stimulus that follows a relatively less
aversive event. In the present experiment, the authors tested the counterintuitive prediction of that theory, that pigeons
should prefer a discriminative stimulus that follows the absence of reinforcement over a discriminative stimulus that follows
reinforcement. Results supported the theory. |
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