This paper uses a new data set on child-adoption matching to estimate the preferences of potential adoptive parents over U.S.-born and unborn children relinquished for adoption. We identify significant preferences favoring girls and unborn children close to birth, and against African-American...

In this paper, we study the incentives of firms to promote innovation. We analyze a situation in which an employee in a firm is inspired with an idea for a new product. In a framework in which intellectual property rights on ideas are imperfect, we analyze the employee's decision of whether to...

We consider a securities market with bid-ask spreads at any period, including liquidation. Although the minimum-cost super-replication problem is non-linear, we introduce an auxiliary problem that allows us to characterize no-arbitrage via linear programming techniques. Since no-arbitrage per se...

We address the problem faced by innovators who have an idea for a marketable product but must hire employees to bring the product to the market. However, newly hired employees learn the idea and may attempt to bring the product to the market themselves. We develop a bargaining model that...

We study a dynamic matching environment where individuals arrive sequentially. There is a tradeoff between waiting for a thicker market, allowing for higher quality matches, and minimizing agents' waiting costs. The optimal mechanism cumulates a stock of incongruent pairs up to a threshold and...

In criminal organizations, diffusing information widely throughout the organization might lead to greater internal efficiency (in particular, since these organizations are self-sustaining, through facilitating cooperation). However, this may come at a cost of leaving the organization more...

We address the problem faced by innovators who have an idea for a marketable product butmust hire employees to bring the product to the market. Information leakage implies that newly hired employees become informed of the idea and may attempt to bring the product to the market themselves. We...