In many decentralised markets, the traders who benefit most from an exchange do not employ intermediaries even though they can easily afford them. For other traders, those who benefit little from trade, intermediaries are too expensive. Together, these observations lead to empirically observed...

This paper analyses a sufficient condition for uniqueness of equilibrium in two-sided matching with non-transferable utility. The condition is easy to interpret, being based on the notion that a person’s characteristics both form the basis of their attraction to the opposite sex, and determine...

We develop a neoclassical trade model with heterogeneous factors of production. We consider a world with two factors, labor and ?managers?, each with a distribution of ability levels. Production combines a manager of some type with a group of workers. The output of a unit depends on the types of...

We consider a matching model of the labour market where workers that differ in quality send signals to firms that are also vertically differentiated. Signals allow assortative matching in which the highest quality workers send the highest signals and are hired by the best firms. Matching is...