K-WAIS-R, Korean-Wechsler Adult Intelligence Scale-Revised; WCST, Wisconsin Card Sorting Test; K-WAB, Korean version of Western Aphasia Battery; K-AVLT, Korean Auditory Verbal Learning Test; WMS-III, Wechsler Memory Scale-III; K-RCFT, Korean Rey Complex Figures Test; CPT, Continuous Performance Test; BDI, Beck Depression Inventory; HAM-D, Hamilton Rating Scale for Depression.