Oskar Pfungst 芬斯特 ; 格斯特 ; 方斯特
Then in 1907, a German psychologist, Oskar Pfungst, proved that Hans was no animal savant.
不过到了1907年，德国心理学家奥斯卡·芬斯特证实了汉斯并不是一个”动物博学家”。
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Pfungst found that Hans was only successful if his owner knew the answer to the question and was visible to the horse.
WSJ: The Brains of the Animal Kingdom
That is, until Oskar Pfungst, a psychologist, investigated the horse's abilities.
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