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METHOD Initially, a number of stimulus cards are presented to the participant. He or she is then given a stack of additional cards and asked to match each one to one of the stimulus cards, thereby forming separate piles of cards for each. The participant is not told how to match the cards; however, he or she is told whether a particular match is right or wrong. The original WCST used paper cards and was carried out with the experimenter on one side of the desk facing the participant on the other.E. A. Berg. (1948). A simple objective technique for measuring flexibility in thinking J. Gen. Psychol. 39: 15-22. Since the early 1990s, however, computerized versions of the task have been available, the most recent version being the windows-compatible version 4.0.Psychological Assessment Resources. Computerised Wisconsin Card Sort Task Version 4 (WCST). Psychological Assessment Resources; 2003. The latter has the advantage of automatically scoring the test, which was quite complex in the manual version. The test takes approximately 12-20 minutes to carry out and generates the following results:
CLINICAL USE Clinically, the test is widely used by ". USE IN RESEARCH The WCST has been used in such as Motor Neurone Disease has identified at least a subgroup of these patients for whom there is some subtle degree of cognitive dysfunction, in contrast to the traditional view that these were pure disorders of the Motor System . The test is also widely used in research into Schizophrenia e.g.Cannon TD, Glahn DC, Kim J, Van Erp TG, Karlsgodt K, Cohen MS, Nuechterlein KH, Bava S, Shirinyan D., Dorsolateral Prefrontal Cortex Activity During Maintenance and Manipulation of Information in Working Memory in Patients With Schizophrenia, Arch Gen Psychiatry 2005;62:1071-1080.Rossi A, Daneluzzo E, Tomassini A, Struglia F, Cavallaro R, Smeraldi E, Stratta P., The effect of verbalization strategy on Wisconsin Card Sorting Test performance in schizophrenic patients receiving classical or atypical antipsychotics. BMC Psychiatry. 2006 Jan 26;6:3. REFERENCE EXTERNAL LINKS
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