Preference for mirror-image stimulation in differentially reared rhesus monkeys.

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Abstract
Conducted 2 experiments with 10 captive-born surrogate-raised and 8 feral rhesus monkeys. When given a choice between viewing themselves in a mirror or looking at another monkey, feral Ss seemed to prefer viewing the conspecific. Surrogate-reared Ss spent appreciably more time viewing the mirror and interacted more with their reflection than with the conspecific. Results are interpreted in terms of the effects of early social isolation and the psychological properties of mirrors. (PsycINFO Database Record (c) 2006 APA, all rights reserved)