We propose to evaluate data being gathered at the 17 Clinic using existing forms, most of which were developed through a collaboration between our group at UCSD and investigators at ALSPAC. Our goal is to use our expertise with SEM and with LR-based mediational model to analyse existing ALSPAC data to enhance our understanding of how mediators of LR to outcome function in the mid-teens. Eventually, we hope these analyses will contribute to our ability to develop programs to help diminish the risk for heavy drinking and alcohol problems in teenagers carrying a risk for these adverse alcohol outomes through a low LR.