Efficient investment in human capital is a subject of great concern among economists. By means of an overlapping-generations macrodynamic model with credit constraints, imperfect insurance and exogenous labor supply, we appraise inefficiencies related to misinvestment in human capital and...

We study an economy where there are two types of assets. Consumers' promises are the primitive defaultable assets secured by collateral chosen by the consumers themselves. The purchase of these personalized assets by ¯- nancial intermediaries is ¯nanced by selling back derivatives to...

This paper examines the welfare of consumers in an incomplete markets economy with extrinsic uncertainty. It is shown that the utility of one consumer may be minimized at the Walrasian allocation relative to all other equilibrium allocations for a given security structure. Thus, this consumer...