This paper presents results on the stability of the wage dispersion model presented in Mortensen (2003). Specifically, we test four "positive definite" learning processes on a single parameterisation of the underlying model, and submit the most successful to a thorough sensitivity analysis. The...

In many markets, it is possible to find rival sellers charging different prices for the same good. Earlier research has attempted to explain this phenomenon by demonstrating the existence of dispersed price equilibria when consumers must make use of costly search to discover prices. We ask...

In this paper, we apply supermodular game theory to the equilibrium search literature with sequential search. We identify necessary and sufficient conditions for strategic complementarities and prove existence of search market equilibrium. When firms are identical, the Diamond Paradox obtains...