Dolores Acevedo-Garcia, Elizabeth Barbeau, Jennifer Anne Bishop, and Karen M. Emmons are with the Department of Society, Human Development and Health, Harvard School of Public Health, Boston, Mass. Elizabeth Barbeau and Karen M. Emmons are also with the Center for Community-Based Research, Dana-Farber Cancer Institute, Boston. Jocelyn Pan is with the Community Health Program, Tufts University, Medford, Mass.