Mechanical Interest and Ability in a Home Raised Chimpanzee Parts 1-4 Briefly demonstrates the structure and function of a chimpanzee's hands. Follows, from eight months to six years, the development of Viki's manual dexterity in such activities as playing with blocks and toys, fastening snap-and-ring sets, attempting to tie knots, filing one's own nails, and using carpenter's tools. Also see Imitation in a Home-Raised Chimpanzee K.J. and C. Hayes.
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