title: The Dysexecutive Questionnaire advanced: item and test score characteristics, 4-factor solution, and severity classification.
abstract: The Dysexecutive Questionnaire (DEX, , Behavioral assessment of the dysexecutive syndrome, 1996) is a standardized instrument to measure possible behavioral changes as a result of the dysexecutive syndrome. Although initially intended only as a qualitative instrument, the DEX has also been used increasingly to address quantitative problems. Until now there have not been more fundamental statistical analyses of the questionnaire's testing quality. The present study is based on an unselected sample of 191 patients with acquired brain injury and reports on the data relating to the quality of the items, the reliability and the factorial structure of the DEX. Item 3 displayed too great an item difficulty, whereas item 11 was not sufficiently discriminating. The DEX's reliability in self-rating is r = 0.85. In addition to presenting the statistical values of the tests, a clinical severity classification of the overall scores of the 4 found factors and of the questionnaire as a whole is carried out on the basis of quartile standards.
authors.affiliation: Neuropsychological Practice, Moenckebergstr. 19, D-20095 Hamburg, Germany. sb_nph@t-online.de
authors.forename: Sebastian
authors.initials: S
authors.lastname: Bodenburg
authors.forename: Nina
authors.initials: N
authors.lastname: Dopslaff
mesh_terms: D000328:Adult; D001925:Brain Damage, Chronic / Q000175:diagnosis / Q000523:psychology*; D001930:Brain Injuries / Q000175:diagnosis / Q000523:psychology*; D003072:Cognition Disorders / Q000175:diagnosis / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests / Q000706:statistics & numerical data*; D010554:Personality Disorders / Q000175:diagnosis / Q000523:psychology*; D011340:Problem Solving; D011594:Psychometrics / Q000706:statistics & numerical data; D015203:Reproducibility of Results; D012920:Social Behavior Disorders / Q000175:diagnosis / Q000523:psychology*; D011795:Surveys and Questionnaires