Internal consistency reliabilities were calculated for the Tactual Performance Test blocks-per-minute scores for the Preferred Hand (n = 298), Nonpreferred Hand (n = 302), and Both Hands (n = 314) trials, and Total Time. Reliabilities are reported for the total sample and three groups of normal, alcoholic, and undiagnosed patients sent for assessment. The reliabilities ranged from .6102 to .9232. Only three of the discriminate indexes were poor.
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