Arson: characteristics and predisposing factors in offenders with intellectual disabilities

The prevalence rate of arson in offenders with intellectual disabilities (ID) has been reported to be higher than that in the general population. This retrospective study focuses on examining the characteristics of offenders with ID and the range of identified reasons for the index offence. The findings indicate a higher prevalence of arson in this population, along with the fact that the majority of people with ID who have committed arson tend to bypass the Criminal Justice System. A significant number are likely to repeat the behaviour and will also commit other offences. The most common reason for arson appears to be revenge, closely followed by suggestibility. The majority had an associated diagnosis of personality disorders along with an Axis 1 psychiatric diagnosis. Other factors include large family size, history of childhood psychiatric disorders, abuse, homelessness, unemployment and relationship difficulties.