The Dunedin Study is a long-running study of human health and development, based on roughly 1000 people born in Dunedin in 1972. In TV series Why Am I? , the far-reaching findings of the study are explored. This episode focuses on the interplay between nature and nurture, especially in regard to anti-social behaviour — as narrator Susie Ferguson says, "it's as if nature loads a gun, and nurture pulls the trigger." Much of the episode explores a rare mutation in the MAOA gene, a common denominator in violent criminals. Other subjects include depression, and when cannabis use can help cause psychosis.
Are violent criminals born that way, or created in their upbringing? The Dunedin Study set out to find an answer.– Narrator Susie Ferguson, early in this episode
Made with funding from NZ On Air