A short form of the category test for adults

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Abstract
Proposed a 120-item version of the 208-item Category Test for adults. When the test protocols of 70 diverse Ss including 18 with definite brain impairment were scored for both the standard and short form, a very high degree of correlation (r = .95) was found, which suggests that the two forms are nearly equivalent. The application of cut-off scores (normal vs. brain impaired) resulted in only 3 Ss changing classifications from the standard to the short form, with 2 of those changes in the correct direction. A savings in administration time of about one half was observed.