Citizen participation in decision-making has been widely lauded as a method for improving outcomes in democratic governance, environmental management, and international development. However, forms of participation vary widely, and we lack concrete evidence on which specific decision-making procedures achieve the best outcomes. We plan to implement a Randomized Controlled Trial (RCT) to causally isolate the effects of common participatory processes. The study will be implemented in 96 Kenyan villages in Elgeyo-Marakwet County, with the possibility of adding more villages as funding allows. All villages receive a local public good to benefit the community, but villages are randomly assigned to one of three decision-making processes (consultation, voting, or deliberation) to select which public good the community will receive. We compare the differing effects of these common procedures on individual outcomes including self-stated satisfaction, preference change, decision outcomes, and willingness to invest in local public goods.