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More than 50 years ago in 1972, researchers in Dunedin, New Zealand began an ambitious study. They enrolled every baby born in the city that year, more than 1,000 babies in all, in a study designed to learn more about childhood health and development. Remarkably, that study is still going on. As the participants have moved from babyhood to childhood to adulthood, data from the

Danedon study has led to more than 1,400 research papers that have examined how people's

genetics and life experiences shape their lives.

Now, as the participants enter middle age, the researchers have turned their attention

to the next life stage, aging. Today we're

going to talk to a psychologist who's helped lead the Dunedin study for nearly four decades

about what researchers are learning about how we age, why some people age faster or slower

than others, and how early intervention might help forestall some of the challenges that come with growing older.

Welcome to Speaking of Psychology, the flagship podcast of the American Psychological Association

that examines the links between psychological science and everyday life.

I'm Kim Mills.

My guest today is Dr. Terry Moffitt, the associate director of the Dunedin Longitudinal Study,

which she joined in 1986.

She's also the Nancohean University Professor of Psychology at Duke University

and Professor of Social Development at King's College, London.

Dr. Moffat has wide-ranging expertise

in longitudinal methods, developmental theory, clinical mental health research,

...