Journal
JOURNAL OF COMPARATIVE PSYCHOLOGY
Volume 119, Issue 1, Pages 78-89Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0735-7036.119.1.78
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Funding
- NCRR NIH HHS [P51RR00168-36] Funding Source: Medline
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When presented with a choice between I and 3 pieces of food in a type of reversed contingency task, 4 Cotton-top tamarins (Saguinus oedipus) consistently chose the 3 pieces of food and received nothing, even though the choice of I piece would have yielded 3. However, in a task in which the tamarins received the I piece of food when they chose it, all subjects learned to select 1 over 3. Thus, the tamarins' prior failure on the reversed contingency task did not result entirely from an inherent inability to suppress the prepotent response of reaching to the larger of 2 quantities of food. After the experience of selecting the smaller quantity and receiving it, all of the tamarins solved the version of the reversed contingency task that they failed initially. These results suggest that the tamarins' initial failure may have reflected a difficulty with selecting an alternative response option.
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