TY - JOUR
T1 - Grip morphology and hand use in chimpanzees (Pan troglodytes)
T2 - Evidence of a left hemisphere specialization in motor skill
AU - Hopkins, William D.
AU - Wesley, Michael J.
AU - Cantalupo, Claudio
AU - Hostetter, Autumn B.
AU - Pilcher, Dawn L.
PY - 2002/9
Y1 - 2002/9
N2 - Three experiments on grip morphology and hand use were conducted in a sample of chimpanzees. In Experiment 1, grip morphology when grasping food items was recorded, and it was found that subjects who adopted a precision grip were more right-handed than chimpanzees using other grips. In Experiment 2, the effect of food type on grasping was assessed. Smaller food items elicited significantly more precision grips for the right hand. In Experiment 3, error rates in grasping foods were compared between the left and right hands. Significantly more errors were made for the left compared with the right hand. The cumulative results indicate that chimpanzees show a left-hemisphere asymmetry in motor skill that is associated with the use of precision grips.
AB - Three experiments on grip morphology and hand use were conducted in a sample of chimpanzees. In Experiment 1, grip morphology when grasping food items was recorded, and it was found that subjects who adopted a precision grip were more right-handed than chimpanzees using other grips. In Experiment 2, the effect of food type on grasping was assessed. Smaller food items elicited significantly more precision grips for the right hand. In Experiment 3, error rates in grasping foods were compared between the left and right hands. Significantly more errors were made for the left compared with the right hand. The cumulative results indicate that chimpanzees show a left-hemisphere asymmetry in motor skill that is associated with the use of precision grips.
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U2 - 10.1037/0096-3445.131.3.412
DO - 10.1037/0096-3445.131.3.412
M3 - Article
C2 - 12214755
AN - SCOPUS:85047671311
SN - 0096-3445
VL - 131
SP - 412
EP - 423
JO - Journal of Experimental Psychology: General
JF - Journal of Experimental Psychology: General
IS - 3
ER -