Waxing and Waning: Periods of Intermittency in Criminal Careers

Objectives Focusing on intermittency as a specific criminal career dimension, the present study explores the distribution of intermittency as it occurs across individuals and in the course of the criminal career. Methods Using conviction data on repeat offenders ( N = 3716) from the Criminal Career and Life-Course Study (CCLS), overall patterns of intermittency (measured as conviction-free intervals between subsequent convictions) are analyzed. Given different levels of offending before and after conviction-free periods, we examine the length of the conviction-free interval and the extent to which offending in terms of frequency and specialization changes after a conviction-free period. Results On average, repeat offenders show relatively short intermittency periods. However, conviction-free intervals tend to increase towards the end of the criminal career regardless of offending frequency. A substantial minority of offenders has a criminal career characterized by more than one spell of frequent offending separated by an extended period of non-offending. As the intermittency period increases, offending specialization across offending periods declines, but not for all types of offenses. Conclusions This study shows that even after committing several offenses, some offenders experience a prolonged conviction-free interval only to resume offending at a non-trivial rate. Due to the length of their conviction-free interval, these offenders would erroneously have been labeled desisters in many prior studies.