Abstract

The purpose of this study is to begin to characterize performance on the California Card Sorting Test (CCST), a relatively new measure of executive function specifically designed to fractionate problem-solving ability into its cognitive components. Data describing the performance of 135 neurologically intact young adults on the CCST and four other common measures of executive function are presented. Factor analyses indicated that the CCST is a valid measure of concept formation and abstract ability and that the CCST taps abilities different from those measured by commonly used tests of executive function. While further work must be done, the CCST seems to hold promise as a neuropsychological assessment instrument.

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