title: Does True Neurocognitive Dysfunction Contribute to Minnesota Multiphasic Personality Inventory-2nd Edition-Restructured Form Cognitive Validity Scale Scores?
abstract: Previous research has demonstrated RBS and FBS-r to identify non-credible reporters of cognitive symptoms, but the extent that these scales might be influenced by true neurocognitive dysfunction has not been previously studied. The present study examined the relationship between these cognitive validity scales and neurocognitive performance across seven domains of cognitive functioning, both before and after controlling for PVT status in 120 individuals referred for neuropsychological evaluations. Variance in RBS, but not FBS-r, was significantly accounted for by neurocognitive test performance across most cognitive domains. After controlling for PVT status, however, relationships between neurocognitive test performance and validity scales were no longer significant for RBS, and remained non-significant for FBS-r. Additionally, PVT failure accounted for a significant proportion of the variance in both RBS and FBS-r. Results support both the convergent and discriminant validity of RBS and FBS-r. As neither scale was impacted by true neurocognitive dysfunction, these findings provide further support for the use of RBS and FBS-r in neuropsychological evaluations.
authors.affiliation: University of Kansas School of Medicine, Wichita, USA pmartin4@kumc.edu.
authors.forename: Phillip K
authors.initials: PK
authors.lastname: Martin
authors.affiliation: University of Kansas School of Medicine, Wichita, USA.
authors.forename: Ryan W
authors.initials: RW
authors.lastname: Schroeder
authors.affiliation: University of Kansas School of Medicine, Wichita, USA.
authors.forename: Robin J
authors.initials: RJ
authors.lastname: Heinrichs
authors.affiliation: University of Kansas School of Medicine, Wichita, USA.
authors.forename: Lyle E
authors.initials: LE
authors.lastname: Baade
mesh_terms: D000328:Adult; D003072:Cognition Disorders / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008950:MMPI / Q000706:statistics & numerical data*; D008297:Male; D008306:Malingering / Q000175:diagnosis*; D008875:Middle Aged; D009483:Neuropsychological Tests / Q000706:statistics & numerical data*
keywords: Cognitive dysfunction; Malingering; Minnesota Multiphasic Personality Inventory-2nd Edition-Restructured Form; Validity scale