This spring, Dr. Kristin Perry presented at the Society for Research on Child Development Biennial Meeting in Salt Lake City, UT, the Society for Research on Adolescence Annual Meeting in San Diego, CA and the Society for Prevention Research Annual Meeting in Washington D.C. These presentations examined the early precursors and protective factors that are related to adolescent substance use, callous-unemotional traits, and weapon carrying using data from The Maternal and Child Health Study.