In this paper we focus on the implications of consumer heterogeneity for whether competition will improve outcomes in health care markets. We show that competition generally favours the majority group as higher quality for the majority is an effective way to increase the quality signal and...

Consider a principal-agent relationship in which more effort by the agent raises the likelihood of success. This paper provides conditions such that no success bonus induces the agent to exert more effort and the optimal contract is independent of success. Moreover, success bonuses may even...