Forensic clinicians have the option of employing well-validated structured interviews when conducting competency to stand trial (CST) evaluations to ensure adequate coverage of the three prongs delineated in "Dusky v. United States". This study evaluates the effects of feigning on the Evaluation of Competency to Stand Trial-Revised…

The test-retest IQs of 50 patients were correlated. The patients were included in the sample only because they had been given the Wechsler Adult Intelligence Scale before. The interval between test and retest averaged almost two years. All test-retest correlations were .90 or better. (Author)

Assessed Wechsler Adult Intelligence Scale-Revised test-retest stability for 21 psychiatric and neurological patients. Test-retest interval ranged from 2-144 weeks (x=38 weeks). Subtest stability coefficients were highly significant, yet range of gain or loss for any single individual was comparatively large. Gain or loss was associated strongly…

A regression equation relating verbal and full-scale IQs was derived from scores of patients. Scores were highly correlated, and verbal IQ significantly exceeded full-scale IQ. Regression estimates closely estimated mean full-scale IQ, suggesting that the verbal scale serves effectively as a WAIS abbreviation. (Author)

Difficulties inherent in differentiating practice effects from meaningful change in neuropsychological retest data are illustrated in this case study of a personal injury case. Although the patient demonstrated substantial gains on the Wechsler Adult Intelligence Scale Revised, most of the tests given on successive days did demonstrate acceptable…