The impact of military service on criminal offending over the life course: Evidence from a Dutch conviction cohort

Abstract

Objectives: Examination of the relationship between military service and criminal conviction, and evaluation of its sensitivity through the use of two distinct study designs. Methods: Data were collected on the conviction histories of a cohort of men convicted of a crime in 1977 in the Netherlands (n = 678). The men were born between 1940 and 1964, and reached the age of military eligibility during an era when service was compulsory, although they could be classified as ineligible or exempt for a variety of reasons. Information on criminal conviction was collected from age 12 (the age of criminal responsibility) to calendar year 2003. The first study design-a quasi-experiment-uses panel methods and control variables to compare the risk of conviction among men who served in the military to all other men in the sample who did not serve in the military, irrespective of their reason for not serving. The second study design-a natural experiment-compares men who served in the military to men who, as a result of policies of the Dutch government, were exempt from service but otherwise would have served. For example, at various times, the Dutch government exempted an entire birth cohort from service, or exempted men through use of a lottery. Results: In the quasi-experiment, military service reduced the odds of criminal conviction by 22% in each year of the post-service period (odds ratio = 0.78; p