b. 1940
John O. Ledyard is an American economist and game theorist, best known for his contributions to mechanism design, public goods provision, and experimental economics. As a professor at Caltech, he has explored foundational issues in decision theory and the logical structure of strategic reasoning, including critiques of standard solution concepts in extensive-form games.
Pioneered work in mechanism design and the theory of public goods
Co-developed the Groves-Ledyard mechanism for efficient public goods allocation
Advanced experimental economics methodology at Caltech
Critiqued backward induction as a solution concept in extensive-form games
Served as Chair of the Division of Humanities and Social Sciences at Caltech