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The Stroop Test as a Measure of Performance Validity in Adults Clinically Referred for Neuropsychological Assessment

This study was designed to develop performance validity indicators embedded within the Delis-Kaplan Executive Function Systems (D-KEFS) version of the Stroop task. Archival data from a mixed clinical sample of 132 patients (50% male; MAge = 43.4; MEducation = 14.1) clinically referred for neuropsych...

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Bibliographic Details
Published in:Psychological assessment 2018-06, Vol.30 (6), p.755-766
Main Authors: Erdodi, Laszlo A, Sagar, Sanya, Seke, Kristian, Zuccato, Brandon G, Schwartz, Eben S, Roth, Robert M
Format: Article
Language:English
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Summary:This study was designed to develop performance validity indicators embedded within the Delis-Kaplan Executive Function Systems (D-KEFS) version of the Stroop task. Archival data from a mixed clinical sample of 132 patients (50% male; MAge = 43.4; MEducation = 14.1) clinically referred for neuropsychological assessment were analyzed. Criterion measures included the Warrington Recognition Memory Test-Words and 2 composites based on several independent validity indicators. An age-corrected scaled score ≤6 on any of the 4 trials reliably differentiated psychometrically defined credible and noncredible response sets with high specificity (.87-.94) and variable sensitivity (.34-.71). An inverted Stroop effect was less sensitive (.14-.29), but comparably specific (.85-90) to invalid performance. Aggregating the newly developed D-KEFS Stroop validity indicators further improved classification accuracy. Failing the validity cutoffs was unrelated to self-reported depression or anxiety. However, it was associated with elevated somatic symptom report. In addition to processing speed and executive function, the D-KEFS version of the Stroop task can function as a measure of performance validity. A multivariate approach to performance validity assessment is generally superior to univariate models. Public Significance Statement The Stroop test can function as a performance validity indicator by identifying unusual patterns of responding. Invalid performance was associated with higher levels of self-reported somatic symptoms.
ISSN:1040-3590
1939-134X
DOI:10.1037/pas0000525