“People are curious about how lives unfold,” says Terrie Moffitt, describing the public interest that has created a worldwide audience for her research. Moffitt studies how genetic and environmental risks work together to shape the developmental course of abnormal human behaviors and psychiatric disorders. She is associate director of the Dunedin Longitudinal Study, which follows 1,000 people born in 1972-73 in a New Zealand town, and also directs the Environmental Risk Longitudinal Twin Study, which follows 1,100 British families with twins born in 1994-95. Moffitt is an internationally renowned clinical psychologist who completed her hospital training in 1984 at the UCLA Neuropsychiatric Institute. Topping her long publication list is a 1972 feature film about stock car racing legend Richard Petty, where young Temi Moffitt had a small part. Moffitt and her collaborator and husband Avshalom Caspi joined the Duke faculty in 2007 and also hold faculty positions at the Institute of Psychiatry in England. Email: terrie.moffitt@duke.edu. Web: http://moffittcaspi.com.