The Cochrane Schizophrenia Group is concerned with the evaluation of the treatment and rehabilitation of people with non-affective, functional, psychotic illnesses. Whilst the treatment of those with schizophrenia is a major focus of the Group, the care of those suffering from unspecified 'chronic/severe' mental illnesses and non-organic, schizophrenia-like conditions also falls under the Group's umbrella. In addition, the evaluation of care of those with the primary diagnosis of schizophrenia compounded by depression, substance misuse or specific problematic behaviours such as fire setting or aggression is relevant to this Group. Finally, evaluating the management of problems associated with interventions for schizophrenia or chronic/severe mental illnesses, such as the adverse effects of medication, is also within the Cochrane Schizophrenia Group's scope.