Development and validation of the Autonomy Scale Amsterdam

Area of Science:

• Psychology
• Psychiatry
• Psychometrics

Background:

• Autonomy is a crucial concept in mental health.
• Existing measures of autonomy may not fully capture its nuances, particularly in psychiatric contexts.
• A validated scale is needed to assess autonomy comprehensively.

Purpose of the Study:

• To develop and validate the Autonomy Scale Amsterdam (ASA).
• To provide a reliable and valid measure of autonomy relevant for psychiatric research and practice.
• To assess the psychometric properties of the ASA in a general population sample.

Main Methods:

• Scale development based on literature review and expert consultation.
• Validation using three general population samples (total N=856).
• Psychometric analyses including factor structure, reliability, convergent/discriminant validity, and criterion validity.

Main Results:

• A 6-factor structure (Self-integration, Engagement with life, Goal-directedness, Self-control, External constraints, Social support) demonstrated superior fit and high reliability.
• The ASA showed good convergent and discriminant validity with related constructs.
• The scale demonstrated criterion validity with well-being outcomes.
• The ASA showed incremental validity over an existing autonomy measure in predicting mental health.

Conclusions:

• The Autonomy Scale Amsterdam (ASA) is a psychometrically sound measure of autonomy.
• The ASA is a valuable tool for assessing autonomy in the general population and has implications for understanding mental health and disorders.
• The ASA offers unique predictive value for mental health outcomes beyond existing measures.