We consider public-private partnerships, in which a public official selects a project that is then developed and operated by a private contractor. We derive optimal public accounting rules when the official's choice among projects is biased by ideology or social ties or because of pandering to...

Payment card associations offer both debit and credit cards and sometimes engage in a tie-in on the merchant side through the so-called honor-all-cards (HAC) rule. This article analyzes the impact of the HAC rule, using a simple model with two types of transactions subject to different...

This chapter analyzes the private rationale and the social costs and benefits of market foreclosure, here defined as a firm's restriction of output in one market through the use of market power in another market. The chapter first focuses on vertical foreclosure (in which full access to a...