Utility of the D-KEFS Color–Word Interference Test as an Embedded Validity Indicator in Psychoeducational Evaluations

Document Type

Article

Publication Date

1-12-2023

Abstract

Objective: Previous investigations have yielded divergent results regarding the clinical utility of the Delis–Kaplan Executive Function System (D-KEFS) color–word interference test (CWIT) as an embedded validity indicator. The present study sought to cross-validate previously identified indicators and cutoffs in a sample of adults referred for psychoeducational testing. Method: Archival data from 257 students and community members self- referred for a psychoeducational evaluation at a university clinic in the South were analyzed. Individuals who failed 0 criterion measures were included in the credible group and individuals failing 2 or more criterion measures were included in the noncredible group. Individuals who failed only one of the criterion measures were excluded (n = 53), resulting in a final sample of 204 (credible group n = 164; noncredible group n = 40). Results: Individual conditions yielded high specificity (.88–.91) and moderate sensitivity (.30–.45) at a cutoff of ≤6. Composite indicators yielded high specificity (.94–.99) and low to moderate sensitivity (.20–.40) at previously established cutoffs. Utilizing more liberal cutoffs increased sensitivity (.28–.53) at the predictable cost to specificity (.83–.91). Conclusions: While a cutoff of ≤6 resulted in high specificity for most conditions, composite indicators appear to be more robust. Additional research is needed before recommending any specific cutoff be used in clinical practice with individuals seeking psychoeducational assessment.

Publication Source (Journal or Book title)

Psychology and Neuroscience

First Page

138

Last Page

146

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