Three Essays in the Economics of Information


Book Description

This thesis is comprised of three essays in the economics of information. In the first one we analyze the prac-tice of price discrimination from the prism of consumer-data driven market segmentation. We are particularly interested in the consumer-optimal segmentations, and in particular those that benefit poorer consumers the most. We show that once such distributive preferences are considered, optimal segmentations might not co-incide with consumer-optimal segmentations without distributive preferences. In particular, such "redistributive" segmentations might induce some extra profits to the firm. We also provide insights on the general shape of such redistributive segmentations. In the second chapter we study a persuasion problem in which the receiver is a "wishful thinker", meaning that he distorts his beliefs in the direct of more optimistic scenarios. We show how such bias impacts the effec-tiveness of information provision as a tool for inducing certain types of behavior, and illustrate our argument with three applications: information campaigns designed by health agencies, financial reports designed by a financial broker and political information in the context of elections.In the third chapter we study a persuasion problem in which the audience is composed of receivers who per-ceive the information being transmitted with varying degrees of refinement. We characterize the joint distribu-tion of beliefs that a sender can induce in the electorate in such a setting and show that the value that the sender can obtain through persuasion can be retrieved by process of recursive concavification of its indirect utility.










Essays in the Economics of Uncertainty


Book Description

These three elegant essays develop principles central to the understanding of the diverse ways in which imperfect information affects the distribution of resources, incentives, and the evaluation of economic policy. The first concerns the special role that information plays in the allocation process when it is possible to improve accuracy through private investment. The common practice of hiring "experts" whose information is presumably much better than their clients' is analyzed. Issues of cooperative behavior when potential group members possess diverse pieces of information are addressed. Emphasis is placed on the adaptation of the "core" concept from game theory to the resource allocation model with differential information. The second essay deals with the extent to which agents can influence the random events they face. This is known as moral hazard, and in its presence there is a potential inefficiency in the economic system. Two special models are studied: the role of moral hazard in a monetary economy, and the role of an outside adjudicatory agency that has the power to enforce fines and compensation. The final essay discusses the problem of certainty equivalence in economic policy. Conditions under which a full stochastic optimization can be calculated by solving a related, much simpler "certainty equivalence" problem are developed. The reduction in the complexity of calculation involved is very great compared with the potential loss of efficiency.