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Development and psychometric evaluation of two substance use disorder knowledge scales
Valerie A Earnshaw1, Mohammad Mousavi1, Braeden Kelly2
1University of Delaware, Department of Human Development and Family Sciences, 111 Alison Hall West, Newark, DE, 19716 USA.
Drug and Alcohol Dependence
|March 4, 2026
Summary
Two new scales were developed to measure knowledge across substance use disorder (SUD) prevention, treatment, and recovery. These validated and reliable scales can assess SUD knowledge in communities and evaluate intervention effectiveness.
Area of Science:
- Addiction Science
- Psychometrics
- Public Health
Background:
- Substance use disorder (SUD) knowledge is crucial for prevention, treatment, and recovery efforts.
- Existing measures may not adequately cover the continuum of SUD.
- Developing comprehensive and validated knowledge scales is essential for research and intervention.
Purpose of the Study:
- To develop and validate two knowledge scales covering the full spectrum of SUD: prevention, treatment, and recovery.
- To ensure content validity through expert review (Study 1).
- To evaluate structural, convergent, and known groups validity, along with reliability (Study 2).
Main Methods:
- Study 1 involved 15 SUD experts for content validity assessment.
- Study 2 included 5,355 community members surveyed online.
- Both studies utilized online platforms for data collection.
Main Results:
- The SUD Prevention Knowledge Scale and SUD Knowledge Scale were developed, each with 16 items.
- Both scales demonstrated strong content, structural, convergent, and known groups validity.
- Acceptable reliability scores were found for the scales and their subscales.
Conclusions:
- The developed SUD knowledge scales are valid and reliable measures.
- These scales can be used to assess SUD knowledge in community settings.
- The scales are potentially useful for evaluating interventions aimed at improving SUD-related knowledge.
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