Concept formation by aphasic adults using Kendler's reversal and nonreversal paradigm

This study investigates the ability of aphasic and nonlanguage impaired adults to form concepts using the reversal-nonreversal paradigm popularized by Kendler. Results indicate a significant difference between the groups to form and then switch concepts. Aphasic subjects perform similarly to the normal subjects on this task but at a slower rate. Implications for therapy and further research are given.