National Poverty Center Working Paper Series #06‐45 December, 2006 Mixing Qualitative and Quantitative Research in Developmental Science: Uses and Methodological Choices Hirokazu Yoshikawa, Harvard University Thomas S. Weisner, University of California, Los Angeles Ariel Kalil, University of Chicago Niobe Way, New York University This paper is available online at the National Poverty Center Working Paper Series index at: http://www.npc.umich.edu/publications/working_papers/ Any opinions, findings, conclusions, or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the view of the National Poverty Center or any sponsoring agency.