title: The Dysexecutive Questionnaire Revised (DEX-R): An extended measure of everyday dysexecutive problems after acquired brain injury.
abstract: The Dysexecutive Questionnaire (DEX) is a tool for measuring everyday problems experienced with the dysexecutive syndrome. This study investigated the psychometric properties of a revised version of the measure (DEX-R), a comprehensive tool, grounded in current theoretical conceptualisations of frontal lobe function and dysexecutive problems. The aim was to improve measurement of dysexecutive problems following acquired brain injury (ABI). Responses to the DEX-R were collected from 136 men and women who had experienced an ABI (the majority of whom had experienced a stroke or subarachnoid haemorrhage) and where possible, one of their carers or family members (n = 71), who acted as an informant. Rasch analysis techniques were employed to explore the psychometric properties of four newly developed, theoretically distinct subscales based on Stuss model of frontal lobe function and to evaluate the comparative validity and reliability of self and informant ratings of these four subscales. The newly developed subscales were well targeted to the range of dysexecutive problems reported by the current sample and each displayed a good level of internal validity. Both self- and independent-ratings were found to be performing reliably as outcome measures for at least a group-level. This new version of the tool could help guide selection of interventions for different types of dysexecutive problems and provide accurate measurement in neurorehabilitation services.
authors.affiliation: a Department of Psychiatry , University of Cambridge , Cambridge , UK.|b National Institute for Health Research (NIHR) Collaborations for Leadership in Applied Health Research and Care (CLAHRC) East at Cambridgeshire and Peterborough NHS Trust , Cambridge , UK.|c Department of Psychology , Institute of Psychiatry, King's College London , London , UK.
authors.forename: Sara Katherine
authors.initials: SK
authors.lastname: Simblett
authors.affiliation: a Department of Psychiatry , University of Cambridge , Cambridge , UK.|b National Institute for Health Research (NIHR) Collaborations for Leadership in Applied Health Research and Care (CLAHRC) East at Cambridgeshire and Peterborough NHS Trust , Cambridge , UK.|d Cambridgeshire and Peterborough NHS Foundation Trust , Cambridge , UK.
authors.forename: Howard
authors.initials: H
authors.lastname: Ring
authors.affiliation: a Department of Psychiatry , University of Cambridge , Cambridge , UK.|b National Institute for Health Research (NIHR) Collaborations for Leadership in Applied Health Research and Care (CLAHRC) East at Cambridgeshire and Peterborough NHS Trust , Cambridge , UK.|e Oliver Zangwill Centre for Neuropsychological Rehabilitation , Ely , UK.|f Cambridgeshire Community Services NHS Trust , St Ives , UK.
authors.forename: Andrew
authors.initials: A
authors.lastname: Bateman
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001930:Brain Injuries / Q000175:diagnosis* / Q000209:etiology / Q000523:psychology*; D017028:Caregivers; D056344:Executive Function; D005190:Family; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008959:Models, Neurological; D008960:Models, Psychological; D009483:Neuropsychological Tests; D011598:Psychoneuroimmunology; D015203:Reproducibility of Results; D020521:Stroke / Q000175:diagnosis / Q000523:psychology; D013345:Subarachnoid Hemorrhage / Q000175:diagnosis / Q000523:psychology; D011795:Surveys and Questionnaires; D055815:Young Adult
keywords: Acquired brain injury; Dysexecutive Questionnaire; Dysexecutive syndrome; Frontal lobe functions; Psychometric properties; Rasch analysis