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Journal Article
Idiosyncratic Sectoral Growth, Balanced Growth, and Sectoral Linkages
We study the growth properties of an economy where different sectors are linked by way of intermediates and potentially grow at different rates. We characterize the economy's equilibrium balanced growth path, and derive an analytical expression that summarizes how TFP growth in a given sector affects value added growth in every other sector and, therefore, aggregate GDP growth. We show in a special case that a version of Hulten's (1978) theorem, whereby the effects of changes in sector-specific productivity on GDP are entirely captured by that sector's share in GDP, also holds in growth rates ...
Journal Article
Does Fiscal Stimulus Work when Recessions Are Caused by Too Much Private Debt?
We argue that fiscal stimulus funded by public debt is effective for increasing economic activity and employment even in recessions that are caused by overborrowing in the private sector. We analyze the impact of government spending on local economies between 2007 and 2009 and find evidence that the fiscal multiplier is higher in geographical areas characterized by higher individual household debt. The higher multiplier in those areas might be attributed to a direct increase in both household consumption and local economic slack.
Working Paper
The zero lower bound and endogenous uncertainty
This paper documents a strong negative correlation between macroeconomic uncertainty and real GDP growth since the Great Recession. Prior to that event the correlation was weak, even when conditioning on recessions. At the same time, many central banks reduced their policy rate to its zero lower bound (ZLB), which we contend contributed to the strong correlation between macroeconomic uncertainty and real GDP growth. To test that theory, we use a model where the ZLB occasionally binds. The model roughly matches the correlation in the data?away from the ZLB the correlation is weak but strongly ...
Journal Article
Lingering Residual Seasonality in GDP Growth
Measuring economic growth is complicated by seasonality, the regular fluctuation in economic activity that depends on the season of the year. The Bureau of Economic Analysis uses statistical techniques to remove seasonality from its estimates of GDP, and, in 2015, it took steps to improve the seasonal adjustment of data back to 2012. I show that residual seasonality in GDP growth remains even after these adjustments, has been a longer-term phenomenon, and is particularly noticeable in the 1990s. The size of this residual seasonality is economically meaningful and has the ability to change the ...
Journal Article
A New “Big Data” Index of U.S. Economic Activity
The authors present a new ?big data? index of U.S. economic activity that can be used to track business and inflation cycles in real time and estimate monthly real gross domestic product growth.
Journal Article
The Fog of Numbers
In times of economic turbulence, revisions to GDP data can be sizable, which makes conducting economic policy in real time during a crisis more difficult. A simple model based on Okun’s law can help refine the advance data release of real GDP growth to provide an improved reading of economic activity in real time. Applying this to data from the Great Recession explains some of the massive GDP revisions at that time. This could provide a guide for possible revisions to GDP releases during the current coronavirus crisis.
Working Paper
The Impact of Health and Economic Policies on the Spread of COVID-19 and Economic Activity
This paper empirically investigates the causal linkages between COVID-19 spread, government health containment and economic support policies, and economic activity in the U.S. up to the introduction of vaccines in early 2021. We model their joint dynamics as generated by a structural vector autoregression and estimate it using U.S. state-level data. We identify structural shocks to the variables by making assumptions on their short-run relation consistent with salient epidemiological and economic features of COVID-19. We isolate the direct impact of COVID-19 spread and policy responses on ...
Journal Article
Coronavirus and the Risk of Deflation
The pandemic caused by COVID-19 represents an unprecedented negative shock to the global economy that is likely to severely depress economic activity in the near term. Could the crisis also put substantial downward pressure on price inflation? One way to assess the potential risk to the inflation outlook is by analyzing prices of standard and inflation-indexed government bonds. The probability of declining price levels—or deflation—among four major countries within the next year indicates that the perceived risk remains muted, despite the recent economic turmoil.
Journal Article
COVID-19 and CO2
One potential side effect from the rapid decline of global economic activity since the worldwide pandemic is a reduction in carbon dioxide emissions. Historically, CO2 emissions rise and fall in tandem with economic activity in the short run. Since the industries most affected by the downturn also produce the most CO2, emissions could drop more than output this time around. However, without substantial and sustained changes in energy sources and efficiency, the concentration of CO2 in the atmosphere—the relevant factor causing climate change—will continue on its upward trajectory.
Working Paper
The Impact of Health and Economic Policies on the Spread of COVID-19 and Economic Activity
This paper empirically investigates the causal linkages between COVID-19 spread, government health containment and economic support policies, and economic activity during 2020 in the U.S. We model their joint dynamics as generated by a structural vector autoregression and estimate it using U.S. state-level data. We identify structural shocks to the variables by making assumptions on their short-run relation consistent with salient epidemiological and economic features of COVID-19. We isolate the direct impact of COVID-19 spread and policy responses on economic activity by controlling for ...