Evaluating Conditional Cash Transfers to Prevent HIV and Other Sexually Transmitted Infections (STIs) in Tanzania • William H. Dow, University of California, Berkeley ; Rose Nathan, Ifakara Health Institute (IHI) ; Carol Medlin, Bill & Melinda Gates Foundation

Willingness to Accept Conditional Economic Incentives to Reduce HIV Risks among Men Who Have Sex with Men in Mexico City • Omar Galarraga, Brown University ; Sandra Sosa-Rubi, National Institute of Public Health (INSP), Mexico ; Cesar Infante, Thomas Coram Research Unit ; Paul Gertler, University of California, Berkeley ; Stefano Bertozzi, Bill & Melinda Gates Foundation

Pathways of Infection: Sexual Networks and HIV/AIDS in a Sub-Saharan Population • Hans-Peter Kohler, University of Pennsylvania ; Stephane Helleringer, Columbia University ; Valerio Bacak, University of Pennsylvania

Strategies for Avoiding Unsafe Sex: Sexual Behavior Change Intentions and Actions in the Context of a Randomized Trial of a Conditional Cash Transfer for HIV Prevention in Tanzania • Laura Packel, University of California, San Francisco