Samenvatting

This study investigates criminal trajectories of individuals involved in organised crime. It combines qualitative information from the Organized Crime Monitor with rap sheets extracted from the Dutch Judicial Documentation System. A semi-parametric group model is used to cluster 854 individuals into groups with similar developmental trajectories, preceding the organised crime index case. Four judicial trajectories are identified: an early starters group with a high peak in late adolescence (11 percent); a persistent group of offenders with crimes from early adolescence until adulthood (30 percent); a unique group of adult onset offenders (40 percent); and a group of offenders without judicial contacts prior to the index case (19 percent). Largely, suspects who fulfilled different roles in criminal groups (leaders, coordinators, lower-level suspects) are equally distributed over the trajectory groups and the same applies to different types of criminal activities.