This four part series looks at the findings from the ultimate nature-nurture test. The mountain of research generated by the Dunedin Longitudinal Study reveals what really makes us who we are, what affect childhood has on as adults, why some of us will go off the rails while others will prosper and be successful.This series follows the fascinating study and information it has provided in almost every field of medical and social development including respiratory and cardiovascular health, addictions, obesity, sexual health, cognitive neuroscience, psychiatry, genetics and criminology and most interestingly the effects of nature and nurture on health and behaviour.