Is 30 the New 21?

The Brian Lehrer Show tackles the question of what makes a person a grown up. Traditionally, the five signs of adulthood are: finishing school, leaving home, becoming financially independent, marrying, and starting a family. How much has that changed? Listen to the segment, and weigh in: when does one become an adult?

Host Mike Pesca, an NPR journalist sitting in for Brian Lehrer, talked with Jeffrey Arnettpsychology professor at Clark University and co-author with Elizabeth Fishel of When Will My Grown-Up Kid Grow Up?: Loving and Understanding Your Emerging Adult.  

Prof. Arnett said it's complicated. A difficult economy, skepticism about marriage, and a general caution also play a role in people's attitudes about adulthood.