We study the aggregate economic effects of diversity policies such as affirmative action in college admission. If agents are constrained in the side payments they can make, the free market allocation displays excessive segregation relative to the first-best. Affirmative action policies can...

This paper studies the aggregate economic effects of diversity policies such as affirmative action in college admission. If agents are constrained in the side payments they can make, the free market allocation displays excessive segregation relative to the first-best. Affirmative action policies...

We study an assignment-with-investment model to highlight a tradeoff between investment in human capital before (ex ante system) and after (ex post system) matching on the labor market. The ex post system is better at coordinating investment within firms whereas the ex ante system is better at...

This paper studies rigidities in sharing joint payoffs (non-transferability) as a source of excessive segregation in labor or education markets. The resulting distortions in ex-ante investments, such as education acquisition, link such mismatches to the possibility of simultaneous...

This paper examines possible effects of college admission policy on general equilibrium outcomes at the high school stage. Specifically, we investigate whether a policy that bases college admission on relative performance at high school could modify in the aggregate the degree of segregation in...

Mobility depends essentially on investment, which often occurs in environments in which individuals match (school) or will match after investing (the labor market). Where partners can transfer surplus to each other only imperfectly (NTU), the pattern of matching will typically be inefficient,...

Progress in the application of matching models to environments in which the utility between matching partners is not fully transferable has been hindered by a lack of characterization results analogous to those that are known for transferable utility. We present sufficient conditions for...

We present a perfectly-competitive model of firm boundary decisions and study their interplay with product demand, technology, and welfare. Integration is pri- vately costly but is effective at coordinating production decisions; non-integration is less costly, but coordinates relatively poorly....