http://www.usatoday.com/life/lifestyle/2004-09-30-extended-adolescence_x.htm
Researchers, sociologists and psychologists say there's a new phase of life — only recently acknowledged — that covers this gap between adolescence and adulthood. What was once the purview of academia has crossed into the popular culture. A plethora of how-to-cope books are declaring a worldwide shift in what it means to be an adult.