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Two experiments tested the hypothesis that the decremental effects of massed practice are due to the development of a negative drive (Hull's Ir). The results indicated that the decremental effects of massed practice on either the pursuit rotor or the two-hand coordinator do not transfer to depress performance or reminiscence on the other task. The results did not support Hull's drive interpretation but were explained by theories attributing decrement to a decreased level of arousal.
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McIntyre et al. (1972) studied this question.
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