Assess students' ability to apply cost-benefit analysis and behavioral economics to design a targeted vaccination incentive program that increases community immunization rates. Tasks include identifying direct and indirect costs and benefits, diagnosing behavioral barriers (e.g., present bias, loss aversion, social norms), selecting and justifying incentive mechanisms (monetary rewards, defaults, nudges, commitment devices), modeling expected uptake and cost-effectiveness, addressing equity and unintended consequences, and proposing measurable evaluation metrics and data collection strategies. Focus: undergraduate-level application and policy design with moderate analytical rigor.