The Children’s Health Policy Centre has completed two companion systematic reviews — on childhood behaviour disorders and on childhood anxiety. Published in the journal Evidence-Based Mental Health these reviews outline effective interventions, including medications, across the entire prevention-to-treatment continuum. The bottom line from both reviews is that there is strong research evidence that we can prevent both behaviour and anxiety disorders in childhood, thereby averting much avoidable adversity early in life. There is also strong evidence that we can treat these disorders effectively, particularly making use of psychosocial interventions such as cognitive-behavioural therapy.