PREDICTING CHANGE IN PATHS OF ADOLESCENT SUBSTANCE USE

该项目的具体目标是：(1)将青少年安置在 根据一组风险对药物使用的高风险或低风险分组 变量；(2)考察中国人的物质使用轨迹 高危和低危人群，并识别青少年 高危人群，或者没有进入问题物质使用的 在研究期结束时，青少年显著减少 它们的用途。低风险组中的青少年进展到 还将确定在研究期间使用有问题的物质； 以及(3)确定哪些特征区别于 停留在预期的风险轨迹上的青少年 类别和那些偏离预期轨道的人。

The specific aims of the project are : (1) to place adolescents into groups either high or low risk for substance use on a set of risk variables; (2) to examine the trajectory of substance use of those in the high risk and low risk groups and to identify adolescents in the high risk group who either did not move into problem substance use by the end of the study period, and adolescents who significantly decreased their use. Adolescents in the low risk group who progressed into problem substance use during the study period will also be identified; and (3) to determine what characteristics distinguish between those adolescents who stayed on the expected trajectory for their risk category and those who moved off the expected trajectory.