This paper reviews the current state of the debate on the relationship
between mental disorder and violent behaviour. Starting from the disc
ussion of methodological approaches to assessing a possible associatio
n, the most important studies carried out on the issue in recent years
are discussed. Their results concur in supporting the assumption that
there is a moderate but reliable association between mental disorder
and violence. However, this does not imply that people with mental ill
ness are generally more likely to commit violent acts than members of
the general population. An elevated risk of violent behaviour is only
evident for specific psychiatric diagnoses and for particular symptom
constellations. For schizophrenia and other psychotic disorders, a sig
nificant increase in the likelihood to commit violent acts is reported
, Substance use disorder and antisocial personality disorder, however,
represent a markedly higher risk for violent behaviour. The article f
urther discusses possible determinant of violent behaviour such as psy
chotic symptoms and comorbidity with substance abuse, and considers wh
o is at particular risk of becoming a target of violent acts.