If 40 is the New 30 Then is 20 the New Junior High?

A recent article in the New York Times asks the question why so many people in their 20′s are taking so long to grow up. In the article, Robin Henig proposes:

"It's happening all over, in all sorts of families, not just young people moving back home but also young people taking longer to reach adulthood overall. It's a development that predates the current economic doldrums, and no one knows yet what the impact will be — on the prospects of the young men and women; on the parents on whom so...