How to spend a token? Trade-offs between food variety and food preference in tufted capuchin monkeys (Cebus apella).
Humans and non-human animals often choose among different alternatives by seeking variety. Here we assessed whether variety-seeking, i.e. the tendency to look for diversity in services and goods, occurs in capuchin monkeys--South-American primates which--as humans--are omnivorous and susceptible to food monotony. Capuchins chose between a Variety-token, that allowed to select one among 10 different foods (one more-preferred and nine less-preferred) and a Monotony-token, that--upon exchange with the experimenter--either allowed to select one among 10 units of the same more-preferred food or gave access to one unit of the more-preferred food. To examine how food preference affects variety-seeking, in the B-condition we presented nine moderately preferred foods, whereas in the C-condition we presented nine low-preferred foods. Overall, capuchins preferred the Variety-token over the Monotony-token and often selected one of the less-preferred foods. These results suggest that variety-seeking is rooted in our evolutionary history, and that it satisfies the need of experiencing stimulation from the environment; at the ultimate level, variety-seeking may allow the organism to exploit novel foods and obtain a correct nutritional intake. Finally, variety-seeking could have contributed to the transition from barter to money in many human cultures.
Addessi
Elsa
E
Consiglio Nazionale delle Ricerche, Istituto di Scienze e Tecnologie della Cognizione, Via Ulisse Aldrovandi 16/b, Rome, Italy. elsa.addessi@istc.cnr.it
Mancini
Alessandra
A
Crescimbene
Lara
L
Ariely
Dan
D
Visalberghi
Elisabetta
E
D000818:Animals; D002428:Cebus; D003657:Decision Making; D004040:Dietary Carbohydrates; D004041:Dietary Fats; D004044:Dietary Proteins; D005247:Feeding Behavior; D005260:Female; D005502:Food; D005518:Food Preferences; D008297:Male; D009483:Neuropsychological Tests; D014741:Video Recording
D004040:Dietary Carbohydrates; D004041:Dietary Fats; D004044:Dietary Proteins