1. Marina Epstein, Madeline Furlong, Rick Kosterman, and Jennifer A. Bailey are with the Social Development Research Group, School of Social Work, University of Washington, Seattle. Kevin M. King is at the Department of Psychology, University of Washington. Sara A. Vasilenko is with The Methodology Center, The Pennsylvania State University, State College. Christine M. Steeger and Karl G. Hill are with the Institute of Behavioral Science, University of Colorado Boulder.