Report is based, offers an overview of international evidence-based programmes and policies for preventing mental and behavioural disorders. It focuses on primary prevention rather than secondary or tertiary prevention. It describes the concepts relating to prevention; the relationship between prevention of mental disorders and the promotion of mental health; malleable individual, social and environmental determinants of mental disorders; the emerging evidence on the effectiveness of preventive interventions; the public health policy and practice implications; and the conditions needed for effective prevention. This complements the work of another major