Boomerang Kids: A Revealing Look at Why So Many of Our Children Are Failing on Their Own, and How Parents Can Help

"She's 22 years old, for heaven's sake! We thought she'd be grown up by now. But no, it's one more crisis after another. And then she calls on us—for emotional support, problem-solving advice. Even money…although we've gotten pretty tough about that. It's like she's still a teen! Why is it so hard for her just to act like an adult?"

Around age 18, most young people expect, and are expected to, move out and live on their own—either at college or in an apartment. But more and more often, "boom...