Primates' Food Preferences Predict Their Food Choices Even Under Uncertain Conditions

نویسندگان

چکیده

Primates’ food preferences are typically assessed under conditions of certainty. To increase ecological validity, and to explore primates’ decision making from a comparative perspective, we tested three primate species (Pan troglodytes, Gorilla gorilla gorilla, Macaca fuscata) (N = 18) in two food-preference tests that created different uncertainty. In the first, showed subjects pairs photographs six foods randomized manner within each session, so could not predict next pairing had respond accordance with their preferences. We found individual differences subjects’ preference when comparing selections this test made trials were blocked by (tested previously: Huskisson et al., 2020). trial second paired stimuli ‘chance’ symbol, representing random reward one foods. Across species, subject’s propensity select chance over known varied type: option was highly preferred, less likely symbol. Additionally, 61.11% rates selecting first positive trend same uncertainty here; these selection significantly correlated between tests. Finally, if chimpanzees received for symbol preferred food, they more again subsequent trial.

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ژورنال

عنوان ژورنال: Animal Behavior and Cognition

سال: 2021

ISSN: ['2372-5052', '2372-4323']

DOI: https://doi.org/10.26451/abc.08.01.06.2021