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Title: Cognitive Aptitude, Peers, and Trajectories of Marijuana Use from Adolescence through Young Adulthood
Resulting in 1 citation.
1. Kelly, Brian C.
Vuolo, Mike
Cognitive Aptitude, Peers, and Trajectories of Marijuana Use from Adolescence through Young Adulthood
PLoS One 14,10 (25 October 2019): e0223152.
Also: DOI: 10.1371/journal.pone.0223152
Cohort(s): NLSY97
Publisher: PLOS
Keyword(s): Armed Services Vocational Aptitude Battery (ASVAB); Cognitive Ability; Drug Use; Peers/Peer influence/Peer relations; Transition, Adulthood

Permission to reprint the abstract has not been received from the publisher.

Background: Using a nationally representative longitudinal cohort, we examine how cognitive aptitude in early adolescence is associated with heterogeneous pathways of marijuana use from age sixteen through young adulthood. We also examine whether this relationship can be explained by the role of cognitive aptitude in the social organization of peer group deviance.

Methods: Using the National Longitudinal Survey of Youth 1997, we identified 5 latent trajectories of frequency of marijuana use between ages 16 and 26: abstainers, dabblers, early heavy quitters, consistent users, and persistent heavy users. Multinomial regression assessed the relationship of cognitive aptitude in early adolescence with these latent trajectories, including the role of peer group substance use in this relationship.

Results: A one decile increase in cognitive aptitude in early adolescence is associated with greater relative risk of the dabbler trajectory (RR = 1.048; p < .001) and consistent user trajectory (RR = 1.126; p < .001), but lower relative risk of the early heavy quitter trajectory (RR = 0.917; p < .05) in comparison with the abstainer trajectory. There was no effect for the persistent heavy user trajectory. The inclusion of peer group substance use-either via illegal drugs or smoking-had no effect on these relationships.

Bibliography Citation
Kelly, Brian C. and Mike Vuolo. "Cognitive Aptitude, Peers, and Trajectories of Marijuana Use from Adolescence through Young Adulthood." PLoS One 14,10 (25 October 2019): e0223152.