lence could suggest implications for program design. Relevant design issues for consideration include the optimal value of transfers, the types of conditions that could be appropriate to achieve various health objectives, the types of services that must be available, and under what circumstances conditions should be enforced or waived. Finally, the role of social marketing, training, and communications campaigns to bring about behavioral change is particularly significant in the context of AIDS, as are other complementary interventions that can be implemented in conjunction with or parallel to cash transfers.