This paper provides systematic evidence on the macroeconomic consequences of war using a new dataset covering 115 conflicts and 145 countries over the past 75 years. We document three main findings.

This paper examines the effects of tariffs along the supply chain using product-level data from a large U.S. wine importer in the context of the 2019-2021 U.S. tariffs on European wines. By combining ...

What does homeless shelter achieve? We leverage administrative records of homeless services in Los Angeles County to construct a novel dataset of daily, site-level counts of shelter beds and occupants ...

Cellphone bans in schools have become a popular policy in recent years in the United States, yet very little is known about their effects on student outcomes. In this study, we try to fill this gap by ...

In addition to working papers, the NBER disseminates affiliates’ latest findings through a range of free periodicals — the NBER Reporter, the NBER Digest, the Bulletin on Health, and the Bulletin on ...

Philippe Aghion, Peter Howitt, and Joel Mokyr. Philippe Aghion, research associate Peter Howitt, and NBER board member Joel ...

We examine global trends in productivity and sectoral dominance across countries and industries, asking whether changes are driven by productivity catch-up or shifts in factor endowments. To address ...

A canonical finding from earlier research is that the cross-sectional variance of income increases sharply with age Deaton and Paxson (1994). However, the trend in this age profile is not separately ...

We use recent advances in natural language processing and large language models to construct novel measures of technology exposure for workers that span almost two centuries. Combining our measures ...

Several competing theories in a number of disciplines point to a possible influence of fertility history on health and mortality. However, the direction of effects is theoretically a-priori unknown ...

Utilizing large-scale surveys of over 27,000 respondents across 13 advanced and emerging market economies conducted between April and May 2024, we examine how knowledge, beliefs, and preferences ...

Are state-imposed behavioral remedies effective substitutes for federal antitrust enforcement? We evaluate state regulation of hospital mergers under Certificates of Public Advantage (COPAs). Using ...