An assessment of a subject's ability to formulate basic concepts, transfer those concepts into action, and to shift set from one concept to another measures the executive functions needed to maintain and shift set, form categories, and formulate concepts. One benefit of the present assessment is that it is nonverbal and does not require the ability to read. The assessment includes a plurality of cards, the number of cards comprising a non-prime number, containing different indicia thereon, the indicia representative of a class of real (non-abstract) objects. The indicia are sortable into a plurality of sets wherein a common feature is identified and used as the sorting criterion, with equal numbers of cards in each set. A subject is directed to make such sorts, which are then scored in order to formulate a rating of the subject's executive function.
CONCEPTUAL SORTING ABILITY ASSESSMENT AND ASSOCIATED METHODS