Related Experiment Video
Updated: May 9, 2026

Administration of Δ9-Tetrahydrocannabinol (THC) in Adolescent and Adult Mice
Published on: August 1, 2025
Adult work commitment, financial stability, and social environment as related to trajectories of marijuana use
Judith S Brook1, Jung Yeon Lee, Stephen J Finch
1Department of Psychiatry, New York University School of Medicine, New York, NY, USA. judith.brook@nyumc.org
Background:
The objective of this study is to examine trajectories of marijuana use among African Americans and Puerto Ricans from adolescence to adulthood, with attention paid to work commitment, financial stability, drug use, and violence.
Methods:
Participants (N = 816) completed in-class questionnaires as students in the East Harlem area of New York City at the first wave and provided follow-up data at 4 additional points in time (mean ages = 14, 19, 24, 29, and 32 years). Among 816 participants, there were 60% females, 52% African American, and 48% Puerto Ricans.
Results:
The chronic marijuana user trajectory group compared with the none or low, increasing, and/or moderate marijuana user trajectory group was associated with negative aspects of work commitment, financial stability, and the social environment. The chronic marijuana user group was similar to the increasing marijuana user group on work commitment and financial stability.
Conclusions:
These results suggest that treating marijuana use in late adolescence may reduce difficulty in the assumption of adult roles. Because chronic marijuana users experienced the most adverse effects in each of the domains, they require more intense clinical intervention than moderate marijuana users.
Related Concept Videos
Influence of Parents and Peers on Identity
Parental Influence on Identity Development
Parents serve as primary guides and managers in an adolescent's life, offering support instrumental in decision-making and personal growth. This guiding role...
Emerging Adulthood
Substance Use Disorders Affecting Sleep
Understanding the concepts of physical dependence,...
Drug Dependence
Stress and Mental Health
Individuals with depression often experience challenges in both their personal and professional...
Conduct Disorder

