In human infants, index finger extension is shown frequently even from 3 months old, and it is considered that such pointing develops into deictic and communicative pointing; however, there are many reports that chimpanzees do not point with the index finger. In the present study the manual actions of two infant chimpanzees were observed when the experimenter was trying to make eye contact with them. The result shows that pointing was shown very rarely by these infant chimpanzees even morphologically.
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