of 16th Annual Meeting 403 WCST category one than did Group A (p < .03)and demonstrated differences in variance on WCST variables including total number of errors (p < .05),total number of trials (p < .006)and learning to learn (p < .005).These findings suggest that a type of "practice effect by proxy may be avoided by administering the WCST before the HCT when both of these tests are used in the evaluation of a given subject.