JUNE 27, 2019 BY KATHLEEN NELSON-SIMLEY Since 1975, the Monitoring the Future (MTF) study of substance use among U.S. adolescents has been conducted annually by the University of Michigan’s Institute for Social Research and …
JUNE 27, 2019 BY KATHLEEN NELSON-SIMLEY Since 1975, the Monitoring the Future (MTF) study of substance use among U.S. adolescents has been conducted annually by the University of Michigan’s Institute for Social Research and …