Numerous flaws exist in the original methodology and conclusions underlying the development of the FBS. One area of particular concern for clients has been the reliance (and perhaps over reliance) upon the results of a particular aspect of the Minnesota Multiphasic Personality Inventory (MMPI-2), known as the Fake Bad Scale (FBS). Issues Regarding MMPI-2 Fake Bad Scale (FBS) A battery of neuropsychological tests can help to identify how or where our client is suffering cognitively, and effective utilization of such testing can help lawyers prove our client’s impairment. Many of our clients who suffer with Chronic Fatigue Syndrome (CFS), fibromyalgia, lyme, and migraines, have cognitive difficulties (and not simply depression). Neuropsychological Testing for Non-Depression/Anxiety Claims These conditions include Fibromyalgia, Chronic Fatigue Syndrome, Lyme Disease, Migraines, and even orthopedic impairments. There are several conditions, beyond the easily identified depression and anxiety impairments, where insurers have become more aggressive in pursuing psychological and neuropsychological testing. References and Tables available on handout.Testing for Psychological and Neuropsychological Conditions Multiple high scores on these scales increases the confidence with which determinations of negative response bias can be made. Conclusions: Joint use of the FBS/FBS-r, FS, and RBS appears to be an effective means of enhancing detection of negative response bias by determining the rate of SVT failure associated with different score combinations. Figure 2 presents FBS-r, RBS, and FS performance at the T 90 cutoff. Figure 1 is a graphic representation of FBS, RBS, and F S performance at T 80. Using an F S cutoff of 6 or higher also increased the observed rate of SVT failure. FBS(-r) and RBS scores above the cutoffs of T 80 and T 90 were associated with the highest rates of SVT failure. Failure rates ranged from 2 -63% depending on the cutoff score combination and SVT examined. Percent Failing SVTs by High/Low FBS-r, RBS, and Fs Score Levels (T = 90) (Validation Sample) Base rate of SVT failure Total Sample (N = 1187): WMT 31%, MSVT 22%, CARB 16%, TOMM 12% RBS Validation Subsample (n = 301): WMT 27%, MSVT 22%, CARB 10%, TOMM 11% Results: SVT failure rates increased significantly from below sample base rate to nearly double the base rate across five combinations of low-high FBS/FBS-r/RBS/F S score ranges using T 80/T 90 cutoffs (p <.
FBS ≥ 30/FBS-r ≥ 21 and RBS ≥ 15 (High-High) and FS ≥ 6 Figure 2. Five combinations of low-high FBS (-r), RBS, and F S at T 80 and T 90 cutoff score levels: T 80 1.MMPI-2/MMPI-2 -RF scales: FBS, FBS-r, FS, RBS.N = 1187 with MMPI-2 exclusion criteria (CNS > 30, VRIN/TRIN > 80).Primary diagnoses: chronic pain (37%), anxiety/PTSD (33%), and depression (21%).Archival data from 1257 consecutive referrals (WCB, 56% legal, 25% men 52%).Percent Failing SVTs by High/Low FBS, RBS, and Fs Score Levels (T = 80) (Total Sample) Objective: Examine how different cutoff levels on the MMPI-2 Symptom Validity Scale (FBS), its shorter MMPI-2 -RF version (FBS-r), the Response Bias Scale (RBS) and the MMPI-2 -RF Infrequency-Somatic (F S) predict performance on four commonly used Symptom Validity Tests (SVTs).
Ben-Porath 3 1 Neurobehavioural 2 Independent 3 Kent Associates, Edmonton, Alberta Practice State University Figure 1. Predicting SVT Performance with the MMPI-2 -RF FBS (-r), RBS, and Fs Scales Roger O.