Cutoff Elasticity in Multivariate Models of Performance Validity Assessment as a Function of the Number of Components and Aggregation Method

Base rates of failure on various performance validity tests as a function of age in adults referred for neuropsychological assessment.

“…Since PVTs are rarely used in isolation to determine the credibility of a given neurocognitive profile (Sweet et al, 2021), the risk for elevated false positives on a single instrument may be effectively mitigated by requiring multiple failures on independent PVTs to deem a response set invalid. Multivariate models of PVTs provide superior classification accuracy compared to individual tests (Erdodi, 2021(Erdodi, , 2023a(Erdodi, , 2023c. Whether the confounding effect of age-related changes in BR Fail can also be controlled by administering multiple instruments remains an open empirical question.…”

“…Most participants (89.4%) were native speakers of English. Parts of the data set were used in previous publications focused on the classification accuracy of various PVTs (Erdodi, 2023a(Erdodi, , 2023cErdodi et al, 2019;Erdodi & Rai, 2017;Rai et al, 2023;Sabelli et al, 2021).…”