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...

Introduction /Petra Moser --The roots of agricultural innovation : patent evidence of knowledge spillovers /Matthew Clancy, Paul Hesiey, Yongjie Ji, GianCarlo Moschini --Comment /Alberto Galasso --Quantifying heterogeneous returns to genetic selection : evidence from Wisconsin dairies /Jared...

Introduction / Caroline M. Hoxby and Kevin Stange -- What Healthcare Teaches Us about Measuring Productivity in Higher Education / Douglas Staiger -- The Productivity of U.S. Postsecondary Institutions / Caroline M. Hoxby -- Labor Market Outcomes and Postsecondary Accountability: Are Imperfect...