It has been nearly 40 years since the publication of the classic study Delinquency in a Birth Cohort(1972) by Marvin Wolfgang, Robert Figlio, and Thorsten Sellin, a book that launched the study ofcriminal careers to the forefront of criminology. Today, criminal careers research is one of the mostpopular areas of study, and a vibrant collection of scholars around the world explores the onset,course, desistance, and termination of individual offending careers; the sources of criminal propen-sityandthewaysinwhichitmanifestsinattimesgeneralandothertimesspecificformsofantisocialbehavior; and ways that public policy and criminal justice systems can intervene to reduce crime bytargeting the small cadre of high-rate offenders. Several of these vibrant scholars participated in thecurrent special issue of International Criminal Justice Review, an issue that is devoted to the world-wide study of criminal careers and individual-level constructs that propel criminal careers based ondiverse samples of data.Using a sample of convicted adult sex offenders from the province of Quebec, Canada, PatrickLussier, Stacy Tzoumakis, Jesse Cale, and Joanna Amirault tracked their offending patterns fromadolescence to age 35. Contrary to the popular notion that all sex offenders demonstrate astable andhigh likelihood of continued offending, Lussier and his colleagues found that 56% were very low-rate offenders, 12% were late bloomers, and 25% were low-rate desisters who ‘‘aged out’’ of sexualoffending. Among the sample, 8% of offenders were high-rate, chronic sex offenders. Given theseresults, policy makers should tailor sex offender policies to treat all offenders while providing thegreatest supervision and control to the latter 8%.One of the most important individual-level constructs that drives sustained antisocial behavior islowself-control(Gottfredson&Hirschi,1990),andrecentresearchfoundthatpersonswithverylowself-control were nearly 5.5 times more likely than persons with greater self-control to becomecareer criminals (DeLisi & Vaughn, 2008). In a comparative study using samples selected fromJapan and the United States, Emiko Kobayashi, Alexander Vazsonyi, Pan Chen, and Susan Sharp