A Population Wide Analysis of MCMI-IV Symptom Validity Scales Administered in the Veterans Affairs Healthcare System

< .001). Additionally, the Inconsistency scale positively correlated with MMPI-2-RF non-content validity scales. Less than 1% of MCMI-IV of protocols met the test manual's criteria for invalidity, a significant departure from invalid rates reported on other measures administered to veterans. Diagnostic accuracy analyses suggested new cutoff scores, specifically that overreporting be identified by X Disclosure base rate score (BRS) ≥ 87 and Z Debasement BRS ≥ 84, and underreporting identified by X Disclosure BRS ≤ 49 and Y Desirability BRS ≥ 74. Results suggest that while the MCMI-IV validity indices measure intended constructs, more optimal cutoffs are presented for the veteran population.