Observer bias
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What links here
Clever Hans
Pygmalion effect
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Carl Stumpf
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Animal language
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Ray Hyman
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Bankes's Horse
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Washoe (chimpanzee)
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Irene Pepperberg
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Facilitated communication
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Mister Ed
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List of historical horses
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Nim Chimpsky
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Koko (gorilla)
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Dolphin
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Cetacean
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Clever Hans effect
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