Choice based on exclusion in pigeons |
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Authors: | Tricia?S?Clement Email author" target="_blank">Thomas?R?ZentallEmail author |
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Institution: | University of Kentucky, Lexington, Kentucky, USA. |
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Abstract: | When humans acquire a conditional discrimination and are given a novel-sample-comparison choice, they often reject a comparison
known to be associated with a different sample and choose the alternative comparison by default (or by exclusion). In Experiment
1, we found that if, following matching training, we replaced both of the samples, acquisition took five times longer than
if we replaced only one of the samples. Apparently, the opportunity to reject one of the comparisons facilitated the association
of the other sample with the remaining comparison. In Experiment 2, we first trained pigeons to treat two samples differently
(to associate Sample A with Comparison 1 and Sample B with Comparison 2) and then trained them to associate one of those samples
with a new comparison (e.g., Sample A with Comparison 3) and to associate a novel sample (Sample C) with a different, new
comparison (Comparison 4). When Sample B then replaced Sample C, the pigeons showed a significant tendency to choose Comparison
4 over Comparison 3. Thus, when given the opportunity, pigeons will choose by exclusion. |
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Keywords: | |
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