Susan Pinker, psychologist and award-winning columnist, has written a groundbreaking and controversial book that reveals why learning and behavioral gaps between boys and girls in the classroom are reversed in the workplace.

Pinker examines how fundamental sex differences play out over the life span. By comparing fragile boys who succeed later with high-achieving women who opt out or plateau in their careers, Pinker turns several assumptions upside down: that women and men are biologically equivalent, that intelligence is all it takes to succeed, and that women are just versions of men, with identical interests and goals. In lively prose, Pinker guides readers through the latest findings in neuroscience and economics while addressing these questions: Are males the more fragile sex? What do men with Asperger syndrome or dyslexia tell us about more average men? Which sex is the happiest at work? Why do some male college dropouts earn more than the bright girls who sat beside them in third grade? After three decades of women's educational coups, why do men outnumber women in corporate law, engineering, physical science, and politics? The answers to these questions are the opposite of what we expect.

A provocative examination of how and why learning and behavioral gaps in the nursery are reversed in the boardroom, this illuminating book reveals how sex differences influence career choices and ambition. Through the stories of real men and women, science, and examples from popular culture, Susan Pinker takes a new look at the differences between women and men.