Responses of gibbons (Hylobates lar) to
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Charles W. Hyatt
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Article
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1998
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John Wiley and Sons
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English
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Nine gibbons (Hylobates lar) and one gibbon-siamang crossbreed were observed during exposure to their mirror images over two 30 minute baseline condition periods (mirror off) and four 30 minute treatment condition periods (mirror on). Greater frequencies and durations of gazing at the mirror and mir