"What used to be regressive weekends are now whole years in the lives of some guys," Kimmel tells NEWSWEEK. In almost 400 interviews with mainly white, college-educated twentysomethings, he found that the lockstep march to manhood is often interrupted by a debauched and decadelong odyssey, in which youths buddy together in search of new ways to feel like men. Actually, it's more like all the old ways—drinking, smoking, kidding, carousing—turned up a notch in a world where adolescent demonstrations of manhood have replaced the real thing: responsibility. Kimmel's testosterone tract adds to a forest of recent research into protracted adolescents (or "thresholders" and "kidults," as they've also been dubbed) and the reluctance of today's guys to don their fathers' robes—and commitments. They "see grown-up life as such a loss," says Kimmel, explaining why so many guys are content to sit out their 20s in...
