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Sunspots in the Laboratory

By John Duffy and Eric O'N. Fisher

American Economic Review, June 2005

We show that extrinsic or nonfundamental uncertainty influences markets in a controlled environment. This work provides the first direct evidence of sunspot equilibria. These equilibria require a common understanding of the semantics of the sunspot variab...

Matching with Contracts

By John William Hatfield and Paul R. Milgrom

American Economic Review, September 2005

We develop a model of matching with contracts which incorporates, as special cases, the college admissions problem, the Kelso-Crawford labor market matching model, and ascending package auctions. We introduce a new "law of aggregate demand" for the case o...

Fairness and Redistribution

By Alberto Alesina and George-Marios Angeletos

American Economic Review, September 2005

Different beliefs about the fairness of social competition and what determines income inequality influence the redistributive policy chosen in a society. But the composition of income in equilibrium depends on tax policies. We show how the interaction bet...

The Market for News

By Sendhil Mullainathan and Andrei Shleifer

American Economic Review, September 2005

We investigate the market for news under two assumptions: that readers hold beliefs which they like to see confirmed, and that newspapers can slant stories toward these beliefs. We show that, on the topics where readers share common beliefs, one should no...

Secrecy and Safety

By Andrew F. Daughety and Jennifer F. Reinganum

American Economic Review, September 2005

We provide a model showing that the use of confidential settlement as a strategy for a firm facing tort litigation leads to lower average safety of products sold than would occur if the firm were committed to openness. A rational risk-neutral consumer's r...

Optimal Expectations

By Markus K. Brunnermeier and Jonathan A. Parker

American Economic Review, September 2005

Forward-looking agents care about expected future utility flows, and hence have higher current felicity if they are optimistic. This paper studies utility-based biases in beliefs by supposing that beliefs maximize average felicity, optimally balancing thi...

The Central Role of Noise in Evaluating Interventions That Use Test Scores to Rank Schools

By Kenneth Y. Chay, Patrick J. McEwan, and Miguel Urquiola

American Economic Review, September 2005

Many programs reward or penalize schools based on students' average performance. Mean reversion is a potentially serious hindrance to the evaluation of such interventions. Chile's 900 Schools Program (P-900) allocated resources based on cutoffs in schools...