Mittenberg, W., Theroux-Fichera, S., Zielinski, R. & Heilbronner, R. L., (1995). Identification of malingered head injury on the Wechsler Adult Intelligence Scale--Revised. Professional Psychology: Research & Practice, 26, 491-498.
Nonlitigating head injured patients (N = 67) were compared with 67 age-, IQ-, and occupation-matched participants who were instructed to malinger head trauma symptoms on the Wechsler Adult Intelligence Scale--Revised (WAIS--R). Discriminant function analysis based on the WAIS--R subtests and a Vocabulary-Digit Span difference score were able to accurately classify 79% and 71% of the cases, respectively. Decision rules cross-validated successfully in several independent groups of clinical malingerers. Head injured patients seem to show a pattern of WAIS--R subtest scores that can be discriminated from the profile produced by individuals who attempt to malinger head trauma symptoms. (PsycINFO Database Record (c) 2002 APA, all rights reserved)
Mittenberg, W., Theroux, S., Aguila-Puentes, G., Bianchini, K., Greve, K. & Rayls, K. R., (2001). Identification of malingered head injury on the Wechsler Adult Intelligence Scale--3rd edition. The Clinical Neuropsychologist, 15, 440-445.
Head injured patients show an IQ subtest pattern that can be discriminated from the profile produced by individuals who attempt to malinger intellectual decline due to head trauma. The current paper demonstrates that previously replicated methods for making this discrimination on the WAIS-R generalize to the WAIS-3. The discriminant function equation accurately classified 83% of nonlitigating head-trauma patients with documented injuries and 72% of persons simulating intellectual impairment due to head trauma. A total of 45% of litigating mild head-trauma patients with purported intellectual decline but no documented loss of consciousness, hospitalizaztion, or CT abnormality were classified as malingering by the discriminant function. A Vocabulary-Digit Span difference score provided 71% overall diagnostic accuracy, and may be informative when screening profiles by visual inspection or when complete WAIS-3 results are unavailable.