Life for emerging adults is vastly different today than it was for their counterparts even a generation ago. Young people are waiting longer to marry, to have children, and to choose a career direction. As a result, they enjoy more freedom, opportunities, and personal growth than ever before. But the transition to adulthood is also more complex, disjointed, and confusing.

In Lost in Transition, Christian Smith and his collaborators draw on 230 in-depth interviews with a broad cross-section of emerging adults (ages 18-23) to investigate the difficulties young people face today,...