The M-WCST is a modification of the original Wisconsin Card Sorting Test that eliminates all cards from the original 128-card deck that share more than one attribute with a stimulus card (e.g., each response card whose stimuli match a stimulus card in both color and form was eliminated). This results in a 48-card deck, which is used along with four stimulus cards. This and other modifications enable impaired and elderly adults to more easily understand the directions, reducing frustration. Age-, sex-, and education-based norms are provided in the manual. Four scores are calculated for the M-WCST: Number of Categories Correct, Number of Perseverative Errors, Number of Total Errors, and Percent of Perseverative Errors. In addition, an Executive
Function Composite score can be calculated.