Research article summary:

Base rates of malingering and symptom exaggeration.

Abstract Extract:
Base rates of probable malingering and symptom exaggeration are reported from a survey of the American Board of Clinical Neuropsychology membership. Estimates were based on 33,531 annual cases involved in personal injury, (n = 6,371). disability (n = ... (Full abstract text below)

Published 2002Dec in Journal: J Clin Exp Neuropsychol (Language : eng)

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1. J Clin Exp Neuropsychol. 2002 Dec;24(8):1094-102

Base rates of malingering and symptom exaggeration.

Mittenberg W, Patton C, Canyock EM, Condit DC

Center for Psychological Studies, Nova Southeastern University, Fort Lauderdale, FL 33314, USA. wiley@nova.edu

Base rates of probable malingering and symptom exaggeration are reported from a survey of the American Board of Clinical Neuropsychology membership. Estimates were based on 33,531 annual cases involved in personal injury, (n = 6,371). disability (n = 3,688), criminal (n = 1,341), or medical (n = 22,131) matters. Base rates did not differ among geographic regions or practice settings, but were related to the proportion of plaintiff versus defense referrals. Reported rates would be 2-4% higher if variance due to referral source was controlled. Twenty-nine percent of personal injury, 30% of disability, 19% of criminal, and 8% of medical cases involved probable malingering and symptom exaggeration. Thirty-nine percent of mild head injury, 35% of fibromyalgia/chronic fatigue, 31% of chronic pain, 27% of neurotoxic, and 22% of electrical injury claims resulted in diagnostic impressions of probable malingering. Diagnosis was supported by multiple sources of evidence, including severity (65% of cases) or pattern (64% of cases) of cognitive impairment that was inconsistent with the condition, scores below empirical cutoffs on forced choice tests (57% of cases), discrepancies among records, self-report, and observed behavior (56%), implausible self-reported symptoms in interview (46%), implausible changes in test scores across repeated examinations (45%), and validity scales on objective personality tests (38% of cases).

PMID : 12650234 [PubMed - Indexed for MEDLINE]

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Full Author Information

First Name	LastName	Initials
Wiley	Mittenberg	W
Christine	Patton	C
Elizabeth M	Canyock	EM
Daniel C	Condit	DC

Affiliation: Center for Psychological Studies, Nova Southeastern University, Fort Lauderdale, FL 33314, USA. wiley@nova.edu

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