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  • Title: Brief screening indexes for malingering: A confirmation of Vocabulary minus Digit Span from the WAIS-III and the Rarely Missed Index from the WMS-III.
    Author: Miller LJ, Ryan JJ, Carruthers CA, Cluff RB.
    Journal: Clin Neuropsychol; 2004 May; 18(2):327-33. PubMed ID: 15587678.
    Abstract:
    This study investigated the specificity of empirically derived screening measures for the detection of symptom exaggeration in persons with a diagnosis of alcohol abuse (n = 30), polysubstance abuse (n = 43), or head trauma (n = 27). The first measure evaluated was Vocabulary (V) minus Digit Span (DS) (Mittenberg, Theroux-Fichera, Zielinski, & Heilbronner, 1995); the second measure was the Rarely Missed Index (RMI) for the WMS-III Logical Memory subtest (Killgore & Della-Pietra, 2000). V-DS misclassified 0% of individuals in the alcohol abuse group, 2% of those in the polysubstance abuse group, and 0% of head injury cases. RMI misclassification rates were 3%, 5%, and 7% for the alcohol abuse, polysubstance abuse, and head injury groups, respectively. Overall accuracy rates were 99% for V-DS and 95% for RMI.
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