This chapter reviews and synthesizes our current understanding of the shocks that drive economic fluctuations. The chapter begins with an illustration of the problem of identifying macroeconomic shocks, followed by an overview of the many recent innovations for identifying shocks. It then...

This paper asks whether increases in government spending stimulate private activity. The first part of the paper studies private spending. Using a variety of identification methods and samples, I find that in most cases private spending falls significantly in response to an increase in...

Do shocks to government spending raise or lower consumption and real wages? Standard VAR identification approaches show a rise in these variables, whereas the Ramey-Shapiro narrative identification approach finds a fall. I show that a key difference in the approaches is the timing. Both...

This paper presents new estimates of time spent in home production in the U.S. during the 20th Century. Regressions based on detailed tabulations from early time diary studies are used to construct estimates for housewives that are closer to being nationally representative for the first half of...

This paper empirically tests the importance of the credit channel in the transmission of monetary policy. Three credit variables are analyzed: total bank loans, bank holdings of securities relative to loans, and the difference in the growth rate of short-term debt of small and large firms. In...

This paper tests the importance of technology shocks versus financial shocks for explaining, fluctuations in money. The model presented extends the theory of King and Plosser by recognizing that both money and trade credit provide transactions services. The model shows that the comovements...

This paper takes stock of what we have learned from the "Renaissance" in fiscal research in the ten years since the financial crisis. I first summarize the new innovations in methodology and discuss the various strengths and weaknesses of the main approaches. Reviewing the estimates, I come to...

Can greater investment in infrastructure raise U.S. long-run output? Are infrastructure projects a good short-run stimulus to the economy? This paper uses insights from the macroeconomics literature to address these questions. I begin by analyzing the effects of government investment in both a...

The value of installed computers falls rapidly and therefore computers have a very high user cost. The paper provides a complete account of the non-financial user cost of personal computers -- decomposing it into replacement cost change, obsolescence, instantaneous depreciation, and age-related...

This note explains the diverging trends between real and nominal aggregate inventory-sales ratios. The combined effect of two features of the data explains the divergence. First, while aggregate sales include both goods and services, inventories include only goods. Second, there has been a...