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Developing a new apathy measurement scale: Dimensional Apathy Scale.

Ratko Radakovic1, Sharon Abrahams2

  • 1Psychology-School of Philosophy, Psychology & Language Sciences, University of Edinburgh, UK; Alzheimer Scotland Dementia Research Centre, University of Edinburgh, UK; Anne Rowling Regenerative Neurology Clinic, University of Edinburgh, UK; Euan MacDonald Centre for MND Research, University of Edinburgh, UK.

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|June 29, 2014
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Summary
This summary is machine-generated.

This study developed the Dimensional Apathy Scale (DAS) to measure apathy subtypes in neurodegenerative diseases. The DAS effectively assesses multidimensional apathy, aiding research in various pathologies.

Keywords:
Apathy scaleApathy subtypesDepressionMotivationMotor dysfunctionMultidimensional apathy

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Clinical Psychology

Background:

  • Apathy is a common symptom in neurodegenerative diseases, impacting goal-directed behavior.
  • Existing measures may not adequately capture apathy's nuances, especially in motor-impaired patients.
  • Previous research identified three apathy subtypes: Cognitive, Emotional-affective, and Auto-activation.

Purpose of the Study:

  • To develop and validate a new apathy measure, the Dimensional Apathy Scale (DAS).
  • To ensure the DAS is suitable for patients with motor dysfunction.
  • To assess multidimensional apathy and its subtypes.

Main Methods:

  • A 45-item questionnaire was administered to 311 healthy participants.
  • Exploratory Factor Analysis and Horn's parallel analysis were used for scale development.
  • Internal consistency reliability and concurrent validity with Beck's Depression Inventory II were assessed.

Main Results:

  • A 24-item, 3-subscale Dimensional Apathy Scale (DAS) was developed: Executive, Emotional, and Behavioural/Cognitive Initiation.
  • These factors explained 28.9% of the total variance.
  • The DAS demonstrated good internal consistency and a weak to moderate correlation with depression.

Conclusions:

  • The Dimensional Apathy Scale (DAS) is a reliable and valid instrument for assessing multidimensional apathy.
  • The DAS is suitable for use in patient populations, including those with motor disorders.
  • This scale facilitates further investigation of apathy across diverse neurodegenerative pathologies.