Blueprint: How DNA Makes Us Who We Are

Robert Plomin

Nov. 2018 · MIT Press

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A top behavioral geneticist makes the case that DNA inherited from our parents at the moment of conception can predict our psychological strengths and weaknesses.

In Blueprint, behavioral geneticist Robert Plomin describes how the DNA revolution has made DNA personal by giving us the power to predict our psychological strengths and weaknesses from birth. A century of genetic research shows that DNA differences inherited from our parents are the consistent life-long sources of our psychological individuality—the blueprint that makes us who we are. This, says Plomin, is a game changer.

Plomin has been working on these issues for almost fifty years, conducting longitudinal studies of twins and adoptees. He reports that genetics explains more of the psychological differences among people than all other factors combined. Genetics accounts for fifty percent of psychological differences—not just mental health and school achievement but all psychological traits, from personality to intellectual abilities. Nature, not nurture is what makes us who we are.

Plomin explores the implications of this, drawing some provocative conclusions—among them that parenting styles don't really affect children's outcomes once genetics is taken into effect. Neither tiger mothers nor attachment parenting affects children's ability to get into Harvard. After describing why DNA matters, Plomin explains what DNA does, offering readers a unique insider's view of the exciting synergies that came from combining genetics and psychology.

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Robert Plomin is Professor of Behavioural Genetics at the Institute of Psychiatry, Psychology, and Neuroscience at King's College London. He previously held positions at the University of Colorado Boulder and Pennsylvania State University. He was elected a Fellow of the Academy of Medical Sciences and of the British Academy for his twin studies and his groundbreaking work in behavioral genetics. He is the author or coauthor of many books, including G is for Genes: The Impact of Genetics on Education and Achievement (with Kathryn Asbury).