Testing an expanded theory of planned behavior model to explain marijuana use among emerging adults in a promarijuana community.

ABSTRACT: Opinions about marijuana use in the United States are becoming increasingly favorable, making it important to understand how psychosocial influences impact individuals' use in this context. Here, we used the theory of planned behavior to examine the influence of initial attitudes, norms, and efficacy to resist use on initial intentions and then to examine the effect of initial intentions on actual marijuana use measured 1 year later using data drawn from a community with relatively high use. We expanded the traditional theory of planned behavior model by investigating 2 types of normative influence (descriptive and injunctive) and 2 types of intentions (use intentions and proximity intentions), reasoning that exposure to high use in the population may produce high descriptive norms and pro

SUBMITTER: Ito TA 

PROVIDER: S-EPMC4586319 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature