Jessica M. Lipschitz, Miryam Yusufov, Andrea Paiva, Colleen A. Redding, and Joseph S. Rossi are each with the Department of Psychology and with the Cancer Prevention Research Center, University of Rhode Island, Kingston, Rhode Island. Sara Johnson is with Pro-Change Behavior Systems, Inc., Kingston, Rhode Island. Bryan Blissmer is with the Department of Kinesiology, University of Rhode Island, Kingston, Rhode Island. N. Simay Gokbayrak is with the Department of Psychology, University of Rhode Island, Kingston, Rhode Island. Wayne F. Velicer and James O. Prochaska are each with the Cancer Prevention Research Center, University of Rhode Island, Kingston, Rhode Island.