Why Am I?

AO What determines our personality, health, wealth and happiness? In 1972 the Otago University Medical School embarked on the ultimate nature/nurture test, to study 1037 babies for their entire lives.

AO What is it that makes kids run off the rails, and what can be done about it? Why do some teens become career criminals, while others come right?

G The Dunedin Study has identified a fundamental developmental mechanism that completely rewrites the nature versus nurture argument. It's a genetic switch which is thrown by life events.

G Series Final. This episode looks at the effects of modern life and aging - how excessive cleanliness affects asthma and allergies; how poverty can cause lifelong damage; and the physical effects of social isolation.