We compared the capacity of children, adolescents and adults with and without autism to use (a) intent and severity of consequences information for attributing blame to an offender, and (b) intent and apologies information for inferring willingness to forgive. Participants were presented with two sets of six scenarios obtained by combination of intent and severity (or apology) information, and instructed to indicate appropriate levels of blame (or willingness to forgive). In the blame condition, persons with autism were able to consistently use intent information but not to the same degree as their comparison counterparts. In the forgiveness condition, intent was not taken into account for judging by persons with autism, irrespective of their age.