I am an economic theorist with research interests in market design, mechanism design, and game theory with emphasis on the theory and practice of matching markets and allocation/exchange of discrete resources. My recent research focuses on * The design and analysis of new organ allocation policies, including but not limited to kidney exchange clearinghouses * Axiomatic properties of matching and discrete resource allocation mechanisms, and probabilistic mechanisms * Improving recommendation systems used in adoption of children in foster care * Balanced exchange and matching in two-sided matching markets such as tuition exchange in college admissions, student exchange among colleges * Dynamic matching mechanisms and models * School choice mechanisms