Abstract
Developmental and life-course criminology (DLC) has been the epicenter of criminology for over 35 years. The onset of DLC began with theoretical models that sought to better understand the development of antisocial and criminal activity. Then, with the ‘aging’ of longitudinal studies and the development of advanced quantitative methods, researchers began to empirically test DLC-related hypotheses and propositions. While the extant research base has been extensive, less work has considered how findings from DLC research can inform justice policy. By reviewing key insights from the extant research, this essay focuses on how DLC-related research has made policy gains and, more importantly, how it can lead to more informed decision making surrounding youthful offenders.