A LONG-TERM FOLLOW-UP STUDY

The present study investigated whether several behavioral and psychosocial factors measured during early adolescence pre-dicted regular marijuana use 6 years later in a sample of high school students. As part of a school-based survey, 7th-grade students (N 1132) reported levels of alcohol, tobacco, and marijuana use, and were assessed on several domains of psy-chosocial functioning potentially relevant in the etiology of marijuana use. When students were followed-up in the 12th-grade, 14 % smoked marijuana on a regular basis (once or more per month). Findings indicated that early cigarette smoking, alcohol use, and alcohol intoxication predicted later regular marijuana use. For boys, early marijuana use increased the odds for later regular marijuana use. Cigarett