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.
This episode looks at the effects of modern life and ageing: how excessive cleanliness affects asthma and allergies, and how poverty gets under the skin to cause lifelong damage.
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.