title: Delay choice versus delay maintenance: different measures of delayed gratification in capuchin monkeys (Cebus apella).
abstract: Delaying gratification involves 2 components: (1) delay choice (selecting a delayed reward over an immediate one) and (2) delay maintenance (sustaining the decision to delay gratification even if the immediate reward is available during the delay). Two tasks most commonly have explored these components in primates: the intertemporal choice task and the accumulation task. It is unclear whether these tasks provide equivalent measures of delay of gratification. Here, we compared the performance on the intertemporal choice task and the accumulation task of capuchin monkeys (Cebus apella) belonging to 2 study populations. We found only limited evidence of a significant correlation in performance. Consequently, in contrast to what is often assumed, our data provide only partial support for the hypothesis that these tasks provide equivalent measures of delay of gratification.
authors.affiliation: Unit of Cognitive Primatology and Primate Center, CNR, Istituto di Scienze e Tecnologie della Cognizione.
authors.forename: Elsa
authors.initials: E
authors.lastname: Addessi
authors.forename: Fabio
authors.initials: F
authors.lastname: Paglieri
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Beran
authors.forename: Theodore A
authors.initials: TA
authors.lastname: Evans
authors.forename: Luigi
authors.initials: L
authors.lastname: Macchitella
authors.forename: Francesca
authors.initials: F
authors.lastname: De Petrillo
authors.forename: Valentina
authors.initials: V
authors.lastname: Focaroli
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D002428:Cebus / Q000523:psychology*; D002755:Choice Behavior / Q000502:physiology*; D005260:Female; D008297:Male; D009483:Neuropsychological Tests / Q000592:standards*; D012201:Reward; D013997:Time Factors
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