Spelteoretisk jämvikt som ett resultat av inlärning eller evolution

Abstract

One way of justifying the use of equilibrium concepts in game theory is by appeal to learning or evolution. This paper provides a non-technical introduction to evolutionary game theory. A short summary of basic standard (non-evolutionary) game theory sets the stage and introduces a number of simple games. Evolutionary game theory is then introduced via a simple learning rule, according to which individuals occasionally revise their strategy choices by imitating currently successful peers. The resulting dynamic is studied in the previously introduced games, investigating whether behaviour converges to an equilibrium, and if so, which one. Finally, some empirical evidence is discussed.