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.
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