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Right-handed college students practiced printing inverted and reversed letters, using either their left or their right hand, for ten trials. Half the subjects then continued printing throughout the experiment with the previously practiced hand, while the other half switched to the unpracticed hand for the remaining trials. Transfer was found to be greater from the left to the right hand than vice versa, and the processes controlling responses with the two hands were more similar in the group switched from the left to the right hand than in the group switched from the right to the left hand.
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Robert E. Hicks (1974) studied this question.
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