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After prolonged exposure to their reflected images in mirrors, chimpanzees marked with red dye showed evidence of being able to recognize their own reflections. Monkeys did not appear to have this capacity.
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Gordon G. Gallup (Fri,) studied this question.
www.synapsesocial.com/papers/6a003ce16018b8d0892dafa7 — DOI: https://doi.org/10.1126/science.167.3914.86
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:
Gordon G. Gallup
Science
Tulane University
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