A study at Lund University shows that young Swedish men sentenced to prison for violent or sexual crimes often reoffend. On average, they have been convicted of over 30 crimes before the age of 30.
Researchers at Lund University have followed 266 men between the ages of 18 and 25 who have served prison sentences for violent or sexual crimes. The study, DAABS (Development of Aggressive Antisocial Behavior Study), was conducted in the 2010s and mapped the men’s background, mental health and social situation. The results showed a high degree of social exclusion and mental health problems within the group.
A few years later, a follow-up study was carried out to see how the men’s lives had developed, using various Swedish registers to examine crime, medical contacts and deaths in the group. The study shows that more than two-thirds have continued to commit crimes. From reaching the age of majority at 15, to an average of 28, they have been convicted of an average of 33 crimes each – one in five of which were violence-related.
For comparison, the study included a control group of 10 000 men of the same age. There, the average was one crime per person, and violent crimes were rare.
A separate study also found that one in ten of the group had a psychotic or bipolar disorder, and that ADHD, early alcohol use and exposure to domestic violence were common factors among those convicted.