… drug use onset has the most significant effects on drug use … data collection from adolescence
period to young adulthood. All … substance use and adolescents’ future drug use escalation. …

… impact of perceptions of parent use was stronger when youth were younger and the impact
of peer use … Monitoring the future national results on adolescent drug use: Overview of key …

… for substance use begin for most young people. Although … and other drug use can serve
numerous positively perceived … to substance use onset and escalation during adolescence. We …

… , such as the perception of substance use approval. Schools … for the early onset of substance
use, as well as escalation to … peers on young adult substance use found evidence for peer …

… , adolescents who accurately perceived peer initiation of SU … misperception of peer use was
far more common at younger (… escalations in SU, two in which perceived peer SU precedes …

… In addition, perceived peer SU during early adolescence was tested as a potential moderator
… Reporters also completed annual assessments beginning at age 11. Informed consent was …

… Eighty-six young adults between the ages of 18 and 28 … adolescents’ own perceptions of
their motivations to initiate … that might inhibit substance use escalation than later initiators. Early …

… of substance use initiation among young adolescents [9]. … to escalate until it becomes a
problem. In addition, early … of drug onset, as they predict adolescents’ social perception of …

… Adolescence is a key period for the onset, escalation, and … a composite measure of perceived
peer substance use. These … influence of older and younger peers (including siblings or …

… of the substance use equation: escalation of substance use. To … here as the developmental
period between the onset of … ) use is considered to place adolescents and young adults at …