Why do young people consume marijuana? Extending motivational theory via the Dualistic Model of Passion.

Davis AK, Arterberry BJ, Bonar EE, Bohnert KM, Walton MA. Why do young people consume marijuana? Extending motivational theory via the Dualistic Model of Passion. Translational issues in psychological science. 2018 Mar 1; 4(1):54-64.

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Abstract:

We evaluated an extended model of motivation for consuming marijuana by combining motivational theory and the dualistic model of passion. An online sample of 524 young, frequent marijuana consumers (M = 24; 88% male; M = 21; Mode = 31; 50% used 25-31 days) self-administered several questionnaires including the Marijuana-Harmonious and Obsessive Passion Scale and the Marijuana Motives Measure. Intercorrelations among the obsessive and harmonious passion and motives subscales were small-to-medium. A canonical correlation analysis revealed that obsessive passion was significantly positively associated with coping and conformity motives, while controlling for marijuana use, other motives, and harmonious passion scores. Additionally, harmonious passion was significantly positively associated with expansion, social, enhancement, and coping motives, while controlling for marijuana use and obsessive passion scores. A second canonical correlation analysis revealed that, when motive and passion subscales were included as independent predictors of recent marijuana use and related consequences, high obsessive passion and coping motives emerged as significant predictors of recent use and related consequences. Moreover, high harmonious passion and using less for conformity motives emerged as significant predictors of recent marijuana use. These results demonstrate that passion is related to, but not a proxy for, previously established motives for marijuana use and that, when examined simultaneously, both types of passion predict recent consumption but appear to differentiate whether one will experience use-related consequences. Researchers and clinicians could evaluate whether addressing obsessive passion and coping motives reduces or ameliorates negative outcomes associated with consumption.