He emergence & characteristics of virtual worlds -- The early worlds -- The adoption continuum -- The establishers -- The culture of virtual world users -- Adult user profiles and habits -- Teen user profiles and habits -- Kids & teen worlds -- The emergence of business within virtual worlds --...

Introduction: what have we learned about the problems of and prospects for disadvantaged youth? / Jonathan Gruber -- Education : the behavioral consequences of pre-kindergarten participation for disadvantaged youth / David Figlio and Jeffrey Roth -- Is gaining access to selective elementary...