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“To ensure a well-motivated participant, Pfungst rewarded Clever Hans with a small piece of bread, carrot or sugar each time he responded (interestingly, this same procedure still works well with most undergraduate students today).” — Richard Wiseman
To ensure a well-motivated participant, Pfungst rewarded Clever Hans with a small piece of bread, carrot or sugar each time he responded (interestingly, this same procedure still works well with most undergraduate students today).