ABSTRACT
The aim of the current study was to determine the prevalence of probable attention-deficit/hyperactivity disorder (ADHD) in prisoners and to assess the relationship between ADHD and recidivism. We studied 356 inmates, who were evaluated using the Wender Utah Rating Scale and Adult ADHD Self-Report Scale. Type of crime and other crime-related data were compared between inmates with and without ADHD. The group with probable ADHD had a higher average number of convictions compared to the group without ADHD. The probable ADHD group also demonstrated higher incidence of extortion crime, drug trade, disciplinary action at school, and military service than the group without ADHD. Linear regression analysis revealed that the presence of probable ADHD was effective on the number of convictions. The findings of our study support that the presence of probable ADHD carries a potential risk of being prone to certain crimes and demonstrate a correlation between the presence of probable ADHD and early involvement in crime and the number of convictions.