Neither the occasional nor the heavy use of marijuana by adolescents is associated with decreased motivation, according to clinical data published online ahead of print in the journal Substance Use & Misuse.
A team of Florida International University researchers assessed the relationship between cannabis use and motivation in 79 adolescent subjects. Participants consisted of both long-term regular consumers and occasional users. Investigators assessed subjects’ motivational tendencies through the use of two validated tools, the Apathy Evaluation Scale and the Motivation and Engagement Scale.
Authors reported: “After controlling for confounds, no significant differences were observed between regular and light users on any motivation index. Similarly, no associations between motivation and lifetime or past 30-day cannabis use amount were observed.”
They concluded, “Our findings do not support a link between reduced motivation and CU (cannabis use) among adolescents after controlling for relevant confounds.”