@article{94513e0c15414cc5911b1d5621768196,
title = "Simple reaching is not so simple: Association between hand use and grip preferences in captive chimpanzees",
abstract = "We assessed the relationship between grip preference and hand use in chimpanzees in 2 experiments. In experiment 1, we evaluated consistency in hand use and grip preference across 4 food types. The chimpanzees showed population-level right-handedness and there are significant positive associations for both hand and grip use across food types. In experiment 2, we assessed validity of hand use in relation to grip preference in 2 colonies of chimpanzees via the same methodology. Differences in hand preferences between colonies were associated with variation in the observed grip preferences. There was no evidence of rearing effects on handedness in either colony. We discuss the overall results in the context of the evolution of handedness in relation to increasing motor demands as manifest in variation on grasping behavior.",
keywords = "Chimpanzee, Grip preference, Hand preference",
author = "Hopkins, {William D.} and Russell, {Jamie L.} and Michelle Hook and Stephanie Braccini and Schapiro, {Steven J.}",
note = "Funding Information: The research was supported by NIH grants NS-36605, NS-42867, U42-RR-15090 and RR-00165 to the Yerkes National Primate Research Center or The University of Texas M. D. Anderson Cancer Center (UTMDACC). The Yerkes Center and the UTMDACC Department of Veterinary Sciences are fully accredited by the American Association for Accreditation of Laboratory Animal Care. American Psychological Association guidelines for the ethical treatment of animals were adhered to during all aspects of this study. We thank Dr. Marianne Christel for providing helpful comments on the paper. We thank Nicole Buehler, Margaret Remkus, and Amy McCrory for dedicated data collection at UTMDACC. Correspondence concerning this article should be addressed to Dr. William D. Hopkins, Division of Psychobiology, Yerkes National Primate Research Center, Emory University, Atlanta, Georgia, 30322. E-mail: lrcbh@rmy.emory.edu or whopkins@berry.edu",
year = "2005",
month = apr,
doi = "10.1007/s10764-005-2924-y",
language = "English (US)",
volume = "26",
pages = "259--277",
journal = "International Journal of Primatology",
issn = "0164-0291",
publisher = "Springer New York",
number = "2",
}