Maintenance of delay of gratification by four chimpanzees (Pan troglodytes): the effects of delayed reward visibility, experimenter presence, and extended delay intervals.

Maintenance of delay of gratification by four chimpanzees (Pan troglodytes): the effects of delayed reward visibility, experimenter presence, and extended delay intervals. Research Abstract Details 

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Maintenance of delay of gratification by four chimpanzees (Pan troglodytes): the effects of delayed reward visibility, experimenter presence, and extended delay intervals. Abstract Text:

Michael J Beran,Theodore A Evans,

Previous research in our laboratory has demonstrated that chimpanzees can delay gratification by inhibiting consumption of available food items for as long as 3 min as an experimenter transfers additional food items from a transparent container to a bowl placed in front of the subject. In this study, we examined the influence of the visibility of the food source, as well as the presence of the experimenter, on four chimpanzees' self-control in this paradigm. In Experiment 1 an experimenter transferred 15 preferred food items between a distant opaque container and a bowl placed in front of the subject. In Experiment 2 we tested the chimpanzees with an automated system that (in the absence of the experimenter) transferred up to 36 highly preferred food items from a universal food dispenser to a container located either inside or outside of the subject's enclosure. There were no differences in self-directed behaviors or attentiveness to the food items between the self-imposed and externally imposed delay conditions. A final experiment with the automated paradigm indicated that individuals could delay gratification for up to 11min in order to obtain all 36 food items.

Maintenance of delay of gratification by four chimpanzees (Pan troglodytes): the effects of delayed reward visibility, experimenter presence, and extended delay intervals. Publishing Authors By Initials

MJ Beran,TA Evans,

For similar psychological phenomena and processes: mental processes: perception: visual perception research abstracts see: psychological phenomena and processes: mental processes: perception: visual perception research

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Maintenance of delay of gratification by four chimpanzees (Pan troglodytes): the effects of delayed reward visibility, experimenter presence, and extended delay intervals. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Behavioural processes

VOLUME: 73

Page Numbers: 315-24

Journal Abbreviation: Behav. Processes

ISSN: 0376-6357

DAY: 1

MONTH: 08

YEAR: 2006

Maintenance of delay of gratification by four chimpanzees (Pan troglodytes): the effects of delayed reward visibility, experimenter presence, and extended delay intervals. Information

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LANGUAGE: eng

NlmUniqueID: 7703854

Maintenance of delay of gratification by four chimpanzees (Pan troglodytes): the effects of delayed reward visibility, experimenter presence, and extended delay intervals. Keywords Mesh Terms:

KEYWORDS: Visual Perception

MESH TERMS: psychology

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Grant and Affiliation Information for Maintenance of delay of gratification by four chimpanzees (Pan troglodytes): the effects of delayed reward visibility, experimenter presence, and extended delay intervals.

AFFILIATION: Language Research Center, Georgia State University, P.O. Box 5010, Atlanta, GA 30303, United States. mjberan@yahoo.com <mjberan@yahoo.com>

Country: Netherlands

AGENCY: United States NICHD

GRANT: HD-38051

ACRONYM: HD

MEDLINETA: Behav Processes

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