This paper proposes a test for the existence of placebo effects, as described by the so-called expectancy theory. This theory, which is the dominant medical theory of how placebo effects operate, posits that health outcomes rise in individuals' beliefs about the probability that they are getting...

This paper examines learning by migrating effects on the productivity of migrants who move to the ``megalopolis" from rural areas utilizing the Thailand Labor Force Survey Data. The main contribution of this paper is to develop a simple framework to empirically test for self-selection on the...

A simple two-country model of international trade under uncertainty is considered, where investors choose uncertain projects depending on interest rates, with high rates leading to risky projects. If investment is financed by bond markets, there can be asymmetric equilibria which can be Pareto...

We first point out that, using any of the current criteria for comparing information systems in principal-agent models with moral hazard (such as Kim (1994)'s criterion), it is often impossible to contrast the value of information obtained from different policies of contingent audits that bear...

This paper estimates the prevalence of asymmetric information in a consumer credit market using a field experiment of our design. A major South African lender issued 60,000 direct mail offers where the interest rate was randomized along two different dimensions — an initial “offer...

In principal-agent settings with moral hazard, the fact that agents are altruistic vis-a-vis third parties (e.g. their family) modifies incentive costs. We derive sufficient conditions for the principal to benefit from altruism. They bear on how altruism affects the agent's marginal rate of...

This paper examines whether recent international policy initiatives to facilitate financial rescues in emerging market countries have influenced debtors' incentives to access official sector resources. The paper highlights a country's systemic importance as a key characteristic that drives...

This paper extends the principal-agent model to determine the size of the firm as measured by the number of agent hired. Hiring more agents results in benefits and costs to the principal. The benefits are gains from specialization: higher productivity can be achieved if, as the number of agents...

Collective action clauses (CACs) are provisions specifying that a supermajority of bondholders can change the terms of a bond. We study how CACs determine governments’ fiscal incentives, sovereign bond prices and default probabilities in environments with and without contingent debt and...

In this paper we investigate the principal-multi agent relationship with moral hazard where a risk neutral principal contracts with multiple risk averse agents whose actions are unobservable to the principal. We show that the well--known trade--off between incentive and risk sharing can be...