In this episode of Why Am I?, narrator Susie Ferguson asks why some young people move on from rocky patches to lead conventional lives, and why some continue down a criminal path. Lead researchers from the renowned Dunedin Multidisciplinary Health and Development Research Study — known as “the Dunedin study" — discuss the childhood traits that point to an increased risk of criminality, and place troubled teens into two groups: those who grow out of it and those who don't. Paul and Gary discuss their teenage crimes. While Paul changed his life's trajectory, Gary has a long list of convictions.