NDLI: Comparative assessment of handedness for a coordinated bimanual task in chimpanzees (Pan troglodytes), gorillas (Gorilla gorilla) and orangutans (Pongo pygmaeus).

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Comparative assessment of handedness for a coordinated bimanual task in chimpanzees (Pan troglodytes), gorillas (Gorilla gorilla) and orangutans (Pongo pygmaeus).

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Hopkins, William D. Stoinski, Tara S. Lukas, Kristen E. Ross, Stephen R. Wesley, Michael J.
Description	Country affiliation: United States Author Affiliation: Hopkins WD ( Division of Psychobiology, Yerkes National Primate Research Center, Atlanta, GA 30322, USA. whopkins@berry.edu)
Abstract	Hand preferences for a coordinated bimanual task were assessed in a sample of 31 captive gorillas (Gorilla gorilla) and 19 captive orangutans (Pongo pygmaeus) and were compared with chimpanzee (Pan troglodytes) hand preferences in subjects that were matched on the basis of age, sex, and rearing history. The task required that the apes remove food from the inside edges of a symmetrical polyvinyl chloride pipe presented to them in their home cages. The results indicate significant species differences with chimpanzees showing population-level right-handedness and orangutans showing population-level left-handedness. The gorillas showed a nonsignificant trend toward right-handedness. The results are discussed in terms of possible ecological or biomechanical factors that may influence hand preferences in different ape species.
File Format	HTM / HTML
ISSN	07357036
e-ISSN	19392087
Journal	Journal of Comparative Psychology
Issue Number	3
Volume Number	117
Language	English
Publisher	American Psychological Association
Publisher Date	2003-09-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Discipline Psychology Functional Laterality Pan Troglodytes Psychology Pongo Pygmaeus Psychomotor Performance Animals Appetitive Behavior Feeding Behavior Problem Solving Species Specificity Comparative Study Research Support, U.s. Gov't, P.h.s.
Content Type	Text
Resource Type	Article
Subject	Psychology Ecology, Evolution, Behavior and Systematics

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