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On-Demand Assistance: Experimental Evidence from Indonesia

By Rema Hanna, Benjamin A. Olken, Sudarno Sumarto, Achmad Maulana, Vivi Alatas, and Elan Satriawan

American Economic Journal: Economic Policy

Given labor informality in developing countries, addressing employment shocks is challenging. We study Indonesia’s new approach for on-demand online applications for temporary cash assistance and online job training. Through 20 lotteries over two year...

Trade Protection Along Supply Chains

By Chad P. Bown, Paola Conconi, Aksel Erbahar, and Lorenzo Trimarchi

American Economic Journal: Economic Policy

We combine detailed information on US temporary trade barriers during 1989-2020 with input-output data to study the effects of trade protection along supply chains. We focus on measures imposed against China, which has been the main target of trade protec...

The Missing Loan-to-Value Cycle

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

American Economic Review: Insights

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....

Sequential Protest Formation

By Benjamin Matta

American Economic Journal: Microeconomics

People participate in protests even though it is costly, benefits are not exclusive to participants, and each individual is unlikely to be pivotal. Building on these characteristics, I propose a sequential model of protest formation where opportunities t...

What is Newsworthy? Theory and Evidence

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

American Economic Review: Insights

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 ...

Moonshot: Public R&D and Growth

By Shawn Kantor and Alexander Whalley

American Economic Review, September 2025

We estimate the long-term effect of public R&D on growth in manufacturing by analyzing new data from the Cold War–era space race. We develop a novel empirical strategy that leverages US-Soviet rivalry in space technology to isolate windfall R&D spending...