Transitions in the Use of Multiple Substances from Adolescence to Young Adulthood Gabriel J. Merrin, Kara Thompson, Bonnie J. Leadbeater August 2018 PDF Cite DOI Transitions in the Use of Multiple Substances from Adolescence to Young Adulthood Gabriel J. Merrin, Kara Thompson, Bonnie J. Leadbeater August 2018 PDF Cite DOI Polysubstance use Adolescence Latent Transition Analysis Gabriel J. Merrin Assistant Professor My primary area of research examines the development and stability of identity-based harassment, aggression, substance use, victimization, and other problem behaviors across adolescence and in the transition to young adulthood. Related Social Ecological Determinants of Substance Use Treatment Entry Among Serious Juvenile Offenders From Adolescence Through Emering Adulthood Exploring the Social-Ecological Determinants of Physical Fighting in U.S. Schools - What about Youth in Immigrant Families? Are the Risk and Protective Factors Similar for Gang-Involved, Pressured-to-Join, and Non-Gang-Involved Youth? A Social-Ecological Analysis