This paper assesses the standard data on output, labor input, and capital input, which imply one big wave' in multi-factor productivity (MFP) growth for the United States since 1870. The wave-like pattern starts with slow MFP growth in the late 19th century, then an acceleration peaking in...

Do urban children live more segregated lives than urban adults? Using cellphone location data and following the 'experienced isolation' methodology of Athey et al. (2021), we compare the isolation of students over the age of 16--who we identify based on their time spent at a high school--and...

This paper studies the dynamic behavior of changes in productivity, wages, and prices. Results are based on a new data set that allows a consistent analysis of the aggregate economy, the manufacturing sector, and the nonmanufacturing sector. Results are presented for the U. S., Japan, and an...

Arthur M. Okun's last book, Prices and Quantities, contributes a theory of universal wage and price stickiness, but provides no explanation at all of historical and cross country differences in behavior. The core of this paper provides a new empirical characterization of price and wage changes...

This paper argues that rigid wages cannot provide the underpinnings of a universally valid theory of the business cycle, simply because wages are not universally rigid. Several different statistical techniques suggest that wage rates in the U.K. and Japan are between three and 15 times more...

This paper introduces a new approach to the empirical testing of the Lucas- Sargent-Wallace (LSW) "policy ineffectiveness proposition." Instead of testing that hypothesis in isolation from any plausible alternative, the paper develops a single empirical equation explaining price change that...

How effective are restrictions on mobility in limiting COVID-19 spread? Using zip code data across five U.S. cities, we estimate that total cases per capita decrease by 20% for every ten percentage point fall in mobility. Addressing endogeneity concerns, we instrument for travel by residential...

We examine the role of the ICT revolution in driving productivity growth behavior for the United States and an aggregate of ten Western European nations (the EU-10) from 1977 to 2015. We find that the standard growth accounting approach is deficient when it separates sources of growth between...