5 CALIBRATING MEASURES OF FAMILY ACTIVITIES BETWEEN LARGE- AND SMALL-SCALE DATA SETS Nora Broege* Ann Owens† Anthony P. Graesch‡ Jeanne E. Arnold ‡ Barbara Schneider** Two studies of working families are combined to demonstrate a strategy for producing reliable estimates from the combination of self-reported (large N) and observational (small N) data. Both studies examine where and how dual-career families spend time at The authors gratefully acknowledge the assistance of Leo Goodman and Mike Hout in the development of this manuscript. The authors would also like to thank three anonymous reviewers for their helpful suggestions. This study is part of an interdisciplinary, collaborative research endeavor conducted by members of the UCLA Center on Everyday Lives of Families (CELF), under the direction of Elinor Ochs and the Center on Parents, Children and Work at the University of Chicago and Michigan State University, under the co-direction of Barbara Schnei- der and Linda Waite. These centers are generously supported by the Alfred P. Sloan Foundation program on the Workplace, Workforce, and Working Families, directed by Kathleen Christensen. Direct correspondence to Barbara Schneider, Michigan State University, College of Education, 516 Erickson Hall, East Lansing, MI 48824; email: bschneid@msu.edu. *University of California, Berkeley †Harvard University ‡University of California, Los Angeles **Michigan State University 119 (2007) Sociological Methodology 37(1):119-149