Reliability and validity of the brief Dimensional Apathy Scale (b-DAS)

Radakovic, Ratko, Gray, Debbie, Dudley, Kaitlin, Mioshi, Eneida, Dick, David, Melchiorre, Giulia, Gordon, Harry, Newton, Judith, Colville, Shuna, Pal, Suvankar, Chandran, Siddharthan and Abrahams, Sharon (2020) Reliability and validity of the brief Dimensional Apathy Scale (b-DAS). Archives of Clinical Neuropsychology, 35 (5). 539–544. ISSN 1873-5843

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Abstract

Objective : Apathy is composed of different demotivational subtypes measurable by the Dimensional Apathy Scale (DAS) and can be quickly assessed using the brief DAS (b-DAS). The aim was to determine the reliability and validity of the b-DAS. Method : 53 Amyotrophic Lateral Sclerosis (ALS) patients and 53 of their informants were recruited. Informants completed the b-DAS, the original informant/carer-rated DAS and behavioural interview about the patients (i.e. presence of behaviours such as Apathy/Inertia, Loss of sympathy/empathy). Patients completed measures of depression, anxiety, emotional lability, cognitive functioning and functional disability measures. Results : The b-DAS showed good internal consistency, excellent test-retest reliability, significant positive correlation with the original DAS and no significant correlations with depression, anxiety, emotional lability, cognitive functioning or functional disability measures. Semi-structured behaviour interview showed patients with Apathy/Inertia had significantly higher b-DAS subscale scores and patients with Loss of sympathy/empathy had significantly higher Emotional apathy scores only. Conclusions : The b-DAS is a fast, reliable and valid instrument for screening apathy subtypes independent of physical disability.

Item Type: Article
Faculty \ School: Faculty of Medicine and Health Sciences > School of Health Sciences
Faculty of Medicine and Health Sciences > Norwich Medical School
Depositing User: LivePure Connector
Date Deposited: 10 Jan 2020 04:27
Last Modified: 01 Aug 2020 23:46
URI: https://ueaeprints.uea.ac.uk/id/eprint/73586
DOI: 10.1093/arclin/acaa002

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