In a school choice mechanism, school priorities are often based on student exam scores, by which student true ability may not be perfectly revealed. An ex-post fair matching mechanism (for example, Serial Dictatorship) can be undesirable in that it is not ex-ante fair: it may not match students with higher abilities to better schools, although it always matches students with higher scores to be...

to determine the coverage rate, timeliness and quality of ante-natal care in rural areas under the coverage of health houses in west azerbaijan province, 30 health houses (hh) were randomly selected out of 731 hh in the province. in each hh, using the method of lot quality assurance sampling (lqas) 28 women having recently born babies was selected. data were collected using check-list for facil...

In a partition model, we show that each maximin individually rational and ex-ante maximin efficient allocation of a single good economy is implementable as a maximin equilibrium. When there are more than one good, we introduce three conditions. If none of the three conditions is satisfied, then a maximin individually rational and ex-ante maximin efficient allocation may not be implementable. Ho...

This paper studies two disclosure regimes when a firm with superior private information must rely on a strategic certifier to disclose credibly its prospects. In the ex ante (ex post) disclosure regime, the firm must decide on whether to hire the certifier before (after) observing the certifier's noisy assessment. Endogenously determined certification fees can actually cause the disclosure prob...

We study a model of imperfectly discriminating contests with two ex ante symmetric agents. We consider four institutional settings: Contestants move either sequentially or simultaneously and in addition their types are either public or private information. We find that an effort-maximizing designer of the contest prefers the sequential to the simultaneous setting from an ex ante perspective. Mo...

We present a model of N-player contracting with transaction costs and endogenous property rights. Ex ante agreed surplus sharing can be altered ex post, after irreversible investments in production (characterised by the generalised Cobb-Douglas production function). The actual surplus sharing is determined ex post, after each player has chosen a costly action to alter the surplus sharing in his...

Hold-up risks can be mitigated by creating asymmetric information about the investment using information control. In this paper, we study the investment level and welfare achievable with information control and the information structure that implements them. Our main result identifies a separation between information that creates ex-ante investment incentive and information that causes ex-post ...

In this paper we endogenize the point in time where an agent (and the principal) observe the realization of an additional signal: before the agent’s effort choice (ex ante information) or after (ex post information). We show that there is no difference between incentive and decision problems if the signal is uninformative about the agent’s effort: ex ante information is never worse and – if the...

Estimates of willingness to pay in adversely selected markets tend to understate the ex-ante (or utilitarian) willingness to pay for insurance. This paper derives an ’ex-ante’ willingness to pay curve that measures welfare from behind the veil of ignorance. I provide a strategy to estimate this curve using market choices and costs, combined with a measure of risk aversion. In examples motivated...

We consider a general mechanism design setting where each agent can acquire (covert) information before participating in the mechanism. The central question is whether a mechanism exists which provides the efficient incentives for information acquisition ex ante and implements the efficient allocation conditional on the private information ex post. It is shown that in every private value enviro...