The latter eight sessions focused on the psychological, social, and motivational challenges involved in maintaining these healthy lifestyle behaviors in the long term. The “DPP Lifestyle Intervention Manual of Operations” (copyright 1996) provides detailed information and instructions for each of the 16 sessions. The manual was designed to be used in conjunction with the DPP Protocol and the “DPP Lifestyle Balance Participant Notebook,” which provided companion worksheets for each of the 16 core-curriculum sessions. Spanish translations of the participant materials were available (see http://www.bsc.gwu.edu/dpp/manualsb.htmlvdoc).