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Outside Options and Worker Effort

By Alexander Ahammer, Matthias Fahn, and Flora Stiftinger

American Economic Journal: Applied Economics

We study how outside options affect workers’ incentives to exert effort. We exploit quasiexperimental variation from age- and experience-based cutoffs in Austria’s unemployment insurance (UI), and proxy effort with absenteeism. Extending potential U...

Dynamic Complementarity

By James Heckman, Haihan Tian, Zijian Zhang, and Jin Zhou

American Economic Journal: Applied Economics

Dynamic complementarity is the concept that past investments that lead to higher stocks of skill at one age promote the growth of skills from investment at that age. We define and provide evidence on dynamic complementarity using unique Chinese data fr...

Prime Locations

By Gabriel M. Ahlfeldt, Thilo N. H. Albers, and Kristian Behrens

American Economic Review: Insights, September 2026

We develop a method for delineating prime locations—ultradense clusters of economic activity—within cities and apply it to comprehensive establishment data covering all US metropolitan areas. We further use big data to extend the analysis to a global ...

What Is Newsworthy? Theory and Evidence

By Luis Armona, Matthew Gentzkow, Emir Kamenica, and Jesse M. Shapiro

American Economic Review: Insights, September 2026

We introduce a model in which a benevolent news outlet decides whether to report the realization of a state to a consumer, who pays a cost to receive it. A simple statistical rule, called a proper scoring rule, describes when the outlet should be more lik...

Pricing with Algorithms

By Rohit Lamba and Sergey Zhuk

American Economic Review: Insights, September 2026

This paper studies Markov perfect equilibria in a repeated duopoly model where sellers choose algorithms. An algorithm is a mapping from the competitor's price to own price. Once set, the algorithms respond quickly. Customers arrive randomly, and sellers ...

The Missing Loan-to-Value Cycle

By Manuel Adelino, W. Ben McCartney, and Antoinette Schoar

American Economic Review: Insights, September 2026

We show that the equilibrium loan-to-value (LTV) distribution in the US mortgage market has been remarkably stable over the last quarter century, both in aggregate and region by region, despite large, cross-sectionally heterogeneous house price cycles. Wh...

How Test-Optional Policies in College Admissions Disproportionately Harm High-Achieving Applicants from Disadvantaged Backgrounds

By Bruce Sacerdote, Douglas O. Staiger, and Michele Tine

American Economic Review: Insights, September 2026

We analyze data from one elite institution and find that test score-optional policies harm the likelihood of admission for high-achieving applicants from disadvantaged backgrounds. Under test-optional policies, these applicants submit test scores at too l...

Screening Adaptive Cartels

By Juan Ortner, Sylvain Chassang, and Kei Kawai

American Economic Review: Insights, September 2026

We propose an equilibrium theory of data-driven antitrust oversight in which regulators launch investigations on the basis of suspicious bidding patterns and cartels can adapt to the statistical screens used by regulators. Our main result establishes that...