Comparison of the Wisconsin Card Sorting Test and the Halstead Category Test.

Correlational comparisons of the Wisconsin Card Sorting Test and the Halstead Category Test (Pendleton & Heaton, 1982) are criticized as inadequate to assess the degree to which these two tests call upon the same cognitive processes. Asking patients to "think aloud" while performing on the tests is recommended as a more direct approach to understanding the cognitive components of the tests. Some results of analysis of such think-aloud protocols are presented that suggest the differences and areas of overlap of the two tests.