What is the Added Value of Preschool for Poor Children? Long-Term and Intergenerational Impacts and Interactions with an Infant Health Intervention

This paper was previously circulated under the title "Are Different Early Investments Complements or Substitutes? Long-Run and Intergenerational Evidence from Denmark". We thank Hoyt Bleakley, Gabriella Conti, Rasmus Landersø, Shelly Lundberg, Michael Mueller-Smith, Diane Schanzenbach, Jeffrey Smith, and seminar participants at UC Santa Barbara, the University of Iowa, the University of Michigan, the University of Copenhagen, the University of Southern Denmark, Lund University, Santa Clara University, Stanford University, Statistics Norway, the University of Virginia, USC CESR, the “Early Childhood Inequality Workshop” (Nuremberg), the NBER Summer Institute, the All- California Labor Economics Conference, the ASSA meetings, and the NBER Cohort Studies meeting for helpful comments. We are grateful to Peder Dam and the “DigDag” project for invaluable help with the data on Denmark’s historical administrative structure. Ida Lykke Kristiansen provided excellent research assistance. The Danish Data Archive provided the data from the “Statistical Commune Data Archive.” We gratefully acknowledge financial support from the Danish Council for Independent Research (grant # 4003-00007). The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.

• September 27, 2016