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What is already known on this topic?
A wealth of evidence shows that people with schizophrenia benefit from multiple forms of treatment.1 Specific treatments targeting antisocial and aggressive behaviour, in addition to medication and case management, have been shown to reduce the risk of violent crime.2 Yet, evidence regarding the role of positive psychotic symptoms in promoting violence is contradictory.
What does this paper add?
This study focused on a very selective sample of individuals with schizophrenia who had been sentenced to prison for sexual or violent offences.
Violence was reported by 50% of the offenders with schizophrenia who received no treatment, 27% who were treated while in prison and 25% who received treatment both in prison and after release.
Aggressive behaviour is more common in acute states of psychosis than when positive symptoms are lower.3 The present study showed that among untreated offenders with schizophrenia it was one type of positive …
Competing interests None.