The full version of the Wisconsin Card Sorting Test (WCST) (S. Heaton and others, 1993) was compared to a 64-card version (WCST-64) using normative data and results from 350 neuropsychological patients. The WCST-64 was found useful only for respondents obtaining five or more categories by the end of the first deck. (SLD)

Eighty-seven normal older people were administered the Wisconsin Sorting Test on two occasions averaging over a year apart. There were average retest gains of 5 to 7 standard score points. The standard error of prediction, standard error of difference, and abnormal test-retest discrepancy scores were calculated for clinical use. (SLD)

The Paired-Associate Recognition Test (PART) was developed to test declarative memory using Wisconsin Card Sorting Test stimuli. The reliability and construct validity of the PART were studied with 55 healthy adults. Overall results indicate that the PART can be administered reliably and that it requires declarative memory processes. (SLD)