Psychometric validation of the Dysexecutive Questionnaire (DEX)

Shaw, Simone, Oei, Tian P. S., & Sawang, Sukanlaya (2015) Psychometric validation of the Dysexecutive Questionnaire (DEX). Psychological Assessment, 27(1), pp. 138-147.

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Abstract

This study reported on the validation of the psychometric properties, the factorability, validity, and sensitivity of the Dysexecutive Questionnaire (DEX) in 3 clinical and nonclinical samples. A mixed sample of 997 participants—community (n = 663), psychiatric (depressed [n = 92] and anxious [n = 122]), and neurologically impaired (n = 120)—completed self-report questionnaires assessing executive dysfunction, depression, anxiety, stress, general self-efficacy, and satisfaction with life. Before analyses the data were randomly split into 2 subsets (A and B). Exploratory factor analysis performed on Subset A produced a 3-factor model (Factor 1: Inhibition, Factor 2: Volition, and Factor 3: Social Regulation) in which 15 of the original 20 items provided a revised factor structure that was superior to all other structures. A series of confirmatory factor analyses performed on Subset B confirmed that this revised factor structure was valid and reliable. The revised structure, labeled the DEX-R, was found to be a reliable and valid tool for assessing behavioral symptoms of dysexecutive functioning in mixed community, psychiatric, and neurological samples.

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ID Code: 81629
Item Type: Journal Article
Refereed: Yes
Keywords: DEX-R, Psychometric, Validation, Dysexecutive Syndrome, Mood and Anxiety Disorders
DOI: 10.1037/a0038195
ISSN: 1040-3590
Subjects: Australian and New Zealand Standard Research Classification > PSYCHOLOGY AND COGNITIVE SCIENCES (170000) > PSYCHOLOGY (170100)
Divisions: Current > QUT Faculties and Divisions > QUT Business School
Current > Schools > School of Management
Copyright Owner: Copyright 2015 American Psychological Association
Copyright Statement: This article may not exactly replicate the final version published in the APA journal. It is not the copy of record.
Deposited On: 05 Feb 2015 03:38
Last Modified: 14 May 2015 11:35

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