The present study employed a battery of verbal tests that included a broad range of executive demands to demonstrate the differential contributions of language and executive function to the performance decrement observed in individuals who display impulsive aggressive (IA) outbursts. A profile analysis revealed that despite not differing on tasks requiring limited verbal output, the IAs deviated further from nonaggressive controls as the tasks required increasing spontaneous organization. Results suggest that language ability per se is not impaired in IAs; rather inefficient executive functioning is responsible for their significantly poorer performance on complex verbal tasks. (C) 2002 Elsevier Science Ltd. All rights reserved.
