Oskar Pfungst revealed that the apparent counting ability of which famous horse was really just a result of it following the cues of its handler?

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Oskar Pfungst conducted experiments on Clever Hans and discovered that the horse was not actually counting or performing other intellectual tasks as previously believed, but was instead picking up on unintentional cues from his human handlers.

Oskar Pfungst Revealed That the Apparent Counting Ability of Which