Article
Genetic and environmental influences on substance initiation, use, and problem use in adolescents.
Archives of general psychiatry - 1 Dec 2003
Rhee Soo Hyun, Hewitt John K, Young Susan E, Corley Robin P, Crowley Thomas J, Stallings Michael C
Abstract excerpt
BACKGROUND: We conducted a sibling/twin/adoption study of substance initiation, use, and problem use, estimating the relative contribution of genetic and environmental influences on these phenotypes in adolescents. METHODS: The participants were 345 monozygotic twin pairs, 337 dizygotic twin pairs, 306 biological sibling pairs, and 74 adoptive sibling pairs assessed by the Colorado Center for the Genetics and...
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