The main body of this book is devoted to answering a key question in criminology: What have we learned from recent longitudinal studies of crime and delinquency? Additional chapters include an introduction and overview, an essay reflecting on the findings highlighted in the volume from the broad perspective of the evolutionary ecological theory of crime, and a Future Directions chapter. The volume also includes an appendix which relates each of the reviews to the body of longitudinal studies reviewed in the volume. This not only shows which studies have informed which topics, but also highlights analytic opportunities that have not yet been explored and where this information could be applied in future research.