Replicating the classification accuracy of the Verbal Paired Associates and Visual Reproduction recognition trials as embedded performance validity tests.

Abstract

Objective: This study was designed to replicate previous research on the clinical utility of the Verbal Paired Associates (VPA) and Visual Reproduction (VR) subtests of the WMS-IV as embedded performance validity tests (PVTs) and perform a critical item (CR) analysis within the VPA recognition trial.

Method: Archival data were collected from a mixed clinical sample of 119 adults (M_Age = 42.5, M_Education = 13.9). Classification accuracy was computed against psychometrically defined criterion groups based on the outcome of various free-standing and embedded PVTs.

Results: Age-corrected scaled scores ≤ 6 were specific (.89-.98) but had variable sensitivity (.36-.64). A VPA recognition cutoff of ≤ 34 produced a good combination of sensitivity (.46-.56) and specificity (.92-.93), as did a VR recognition cutoff of ≤ 4 (.48-.53 sensitivity at .86-.94 specificity). Critical item analysis expanded the VPA's sensitivity by 3.5%-7.0% and specificity by 5%-8%. Negative learning curves (declining output on subsequent encoding trials) were rare but highly specific (.99-1.00) to noncredible responding.

Conclusions: Results largely support previous reports on the clinical utility of the VPA and VR as embedded PVTs. Sample-specific fluctuations in their classification accuracy warrant further research into the generalizability of the findings. Critical item analysis offers a cost-effective method for increasing confidence in the interpretation of the VPA recognition trial as a PVT. (PsycInfo Database Record (c) 2024 APA, all rights reserved).