In his dissertation, John E. Fontecha studies the mathematical design of policies aimed at increasing the adoption of specific behaviors/products. His dissertation comprises three main chapters. First, a systematic review of the research literature about incentive programs and policies that promote pro-environmental behavior and technology adoption among individual consumers. Second, a conceptual basis and methodological advancements for maximizing social influence through reach rather than diffusion as well as their application to energy-saving behavior are presented. Finally, a study aimed at bridging the divide between theory and practice in modeling collective behavior by accounting for time passage in threshold modeling and providing a mechanism to update the population's individuals about the actual fraction of adopters.