Kohlberg and Mertens [Kohlberg, E. & Mertens, J. (1986) Econometrica 54, 1003-1039] proved that the graph of the Nash equilibrium correspondence is homeomorphic to its domain when the domain is the space of payoffs in normal-form games. A counterexample disproves the analog for the equilibrium outcome correspondence over the space of payoffs in extensive-form games, but we prove an analog when ...

Does unethical behavior always represent selfish behavior? Consider the seminal dilemma that serves as the foundation for modern moral psychology: The wife of a man named Heinz was near death and desperate for a medicine that he could not afford (Kohlberg, 1963). To save her life, Heinz broke into a drugstore to steal the medicine. Kohlberg asked his subjects, “Should Heinz have stolen for his ...

Most moral psychologists have come to accept two types of moral reasoning: Kohlberg’s justice and Gilligan’s care, but there still seem to be some unresolved issues. By analysing and comparing Kohlberg’s statement on some theoretical issues with some of Gilligan’s statements in an interview in April 2003, I will look at some key issues in the so-called ‘Kohlberg–Gilligan conflict’. Some of the ...

A new algorithm is presented for computing Nash equilibria of ̄nite games. Using Kohlberg and Mertens' structure theorem we show that a homotopy method can be represented as a dynamical system and implemented by Smale's global Newton method. The algorithm is outlined and computational experience is reported. JEL Classi ̄cation C63.

L. Kohlberg (1969) argued that his moral stages captured a developmental sequence specific to the moral domain. To explore that contention, the author compared stage assignments obtained with the Standard Issue Scoring System (A. Colby & L. Kohlberg, 1987a, 1987b) and those obtained with a generalized content-independent stage-scoring system called the Hierarchical Complexity Scoring System (T....