title: Psychometric validation of the Dysexecutive Questionnaire (DEX).
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.
authors.affiliation: School of Psychology, The University of Queensland.
authors.forename: Simone
authors.initials: S
authors.lastname: Shaw
authors.affiliation: School of Psychology, The University of Queensland.
authors.forename: Tian P S
authors.initials: TPS
authors.lastname: Oei
authors.affiliation: QUT Business School.
authors.forename: Sukanlaya
authors.identifier: 0000-0001-7977-7194
authors.initials: S
authors.lastname: Sawang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001008:Anxiety Disorders / Q000175:diagnosis* / Q000523:psychology; D000070642:Brain Injuries, Traumatic / Q000175:diagnosis* / Q000523:psychology*; D003866:Depressive Disorder / Q000175:diagnosis* / Q000523:psychology*; D056344:Executive Function; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics / Q000706:statistics & numerical data*; D011788:Quality of Life / Q000523:psychology; D012016:Reference Values; D015203:Reproducibility of Results; D020377:Self Efficacy; D011795:Surveys and Questionnaires; D055815:Young Adult