Reinhard Selten

Reinhard Selten is best known for his foundational contributions to game theory, particularly his analysis of equilibria in noncooperative games. He shared the 1994 Nobel Memorial Prize in Economic Sciences with John Nash and John Harsanyi for this work. He introduced concepts like subgame perfect equilibrium to the field.

The chainstore paradox is a game theory concept created by Selten to describe a situation where a monopolist uses deterrence strategies against new market entrants. It highlights the conflict between logical backward induction and intuitive real-world business behavior. Selten used this model to pioneer the concept of trembling hand perfect equilibrium.

Yes, in addition to his theoretical work, Selten is considered a pioneer in experimental economics. He conducted numerous laboratory experiments in Germany to study bounded rationality and how humans actually make strategic decisions. His work helped establish the behavioral economics movement in Europe.

Selten introduced the concept of subgame perfect equilibrium to refine Nash's original theory. This concept restricts the predicted outcomes of a game to those that represent credible threats or strategies in every possible subgame. This work earned him the 1994 Nobel Memorial Prize in Economic Sciences alongside John Harsanyi.