Projects per year
AIM: Apathy is a prominent symptom of amyotrophic lateral sclerosis (ALS), but measurement is confounded by physical disability. Furthermore, it has been traditionally measured as a unidimensional symptom despite research demonstrating a multifaceted construct. The new Dimensional Apathy Scale (DAS) has been specifically designed for patients with motor disability to measure 3 neurologically based subtypes of apathy: Executive, Emotional and Initiation. We aimed to explore this behavioural symptom by examining the substructure of apathy in ALS and to determine the reliability and validity of the DAS in patients and their carers.
METHOD: Patients and carers were recruited through the national Scottish Motor Neurone Disease Register and were asked to complete the DAS, the standardised Apathy Evaluation Scale, and the Geriatric Depression Scale-Short Form. 83 patients with ALS, 75 carers and 83 sex-matched, age-matched and education-matched controls participated.
RESULTS: When compared with healthy controls, patients showed a significant increase in apathy on the Initiation subscale, and were significantly less apathetic on the Emotional subscale. Scores on the DAS patient and carer versions did not significantly differ. Internal consistency reliability, convergent and discriminant validity were found to be good for the DAS subscales. There was no association between the DAS and functional disability using the ALS Functional Rating Scale.
CONCLUSIONS: Apathy in ALS is characterised by a specific profile of increased initiation apathy and reduced emotional apathy. The DAS is a reliable and valid measure for the assessment of multidimensional apathy in ALS.
|Number of pages||8|
|Journal||Journal of Neurology, Neurosurgery & Psychiatry|
|Early online date||22 Jul 2015|
|Publication status||Published - 2016|
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- 2 Finished
Alzheimer Scotland Dementia Research Centre
16/05/11 → 31/08/18
- School of Philosophy, Psychology and Language Sciences - Personal Chair of Neuropsychology
- Euan MacDonald Centre for Motor Neuron Disease Research
- Centre for Clinical Brain Sciences
- Anne Rowling Regenerative Neurology Clinic
- Edinburgh Neuroscience
Person: Academic: Research Active