Contracting under Incomplete Information and Social Preferences: An Experimental Study
通过720名参与者的实验，检验了代理人在签约前拥有私人信息时，标准契约理论的预测是否成立，并分析了社会偏好如何解释行为偏差。
Principal-agent models in which the agent has access to private information before a contract is signed are a cornerstone of contract theory. We have conducted an experiment with 720 participants to explore whether the theoretical insights are reflected by the behaviour of subjects in the laboratory and to what extent deviations from standard theory can be explained by social preferences. Investigating settings with both exogenous and endogenous information structures, we find that agency theory is indeed useful to qualitatively predict how variations in the degree of uncertainty affect subjects' behaviour. Regarding the quantitative deviations from standard predictions, our analysis based on several control treatments and quantal response estimations shows that agents' behaviour can be explained by social preferences that are less pronounced than in conventional ultimatum games. Principals' own social preferences are not an important determinant of their behaviour. However, when the principals make contract offers, they anticipate that social preferences affect agents' behaviour.