Options for shortening Halstead's Category Test for adults.
A serious problem with Halstead's Category Test noted by many clinicians is the very long time required by impaired subjects to complete it. This study proposes that abbreviated forms of the Category Test are clinically efficient in judging degree of impairment. The process of problem-solving across items of an abbreviated form by 64 young adult outpatients was not significantly different from that of 35 other young adult outpatients on the standard Category Test. Correlations of various short forms with the standard form were improved slightly when formal scoring of subtests I and II was deleted. Two clinically efficient short forms were identified, which correlated at .97 and .96, respectively.
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Sherrill