Objective: To examine Indiana middle and high school students' use of 17 licit and illicit substances using item response theory to produce theta scores to identify sociodemographics, psychological factors, and normative beliefs associated with life-time drug use. Methods:
Cross-sectional data from 1233 students were examined. Theta scores were calculated across 17 substances using 2PL item response theory modeling. General least squares regressions were performed. Results: Those perceiving their peers/parents approved substance use and those reporting
worse worry control had higher theta scores. Those perceiving the risks of drug use outweighed the benefits and conforming less to negative influences had significantly lower theta scores. Conclusions: Findings support the utility of the Biopsychosocial Model to examine lifetime drug
use and the severity of substances used among adolescents simultaneously.
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ITEM RESPONSE THEORY;
Document Type: Research Article
Publication date: 2015-11-01
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The American Journal of Health Behavior seeks to improve the quality of life through multidisciplinary health efforts in fostering a better understanding of the multidimensional nature of both individuals and social systems as they relate to health behaviors.
The Journal aims to provide a comprehensive understanding of the impact of personal attributes, personality characteristics, behavior patterns, social structure, and processes on health maintenance, health restoration, and health improvement; to disseminate knowledge of holistic, multidisciplinary approaches to designing and implementing effective health programs; and to showcase health behavior analysis skills that have been proven to affect health improvement and recovery.
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