Search Results
Working Paper
Puzzles in the Chinese stock market
Many companies on China?s stock markets have separate, restricted classes of shares for domestic residents and foreigners. These shares are identical other than who can own them, but foreigners pay only about one-quarter the price paid by domestic residents. We argue that the generally higher level (and volatility) of domestic share prices is consistent with the simplest asset pricing model, assuming plausible differences-about 4 percentage-points-in expected rates of return by foreign and domestic investors. We attribute low Chinese expected returns to the limited alternative investments ...
Journal Article
The recent rise and fall of rapid productivity growth
Information technology fueled a surge in U.S. productivity growth in the late 1990s and early 2000s. However, this rapid pace proved to be temporary, as productivity growth slowed before the Great Recession. Furthermore, looking through the effects of the economic downturn on productivity, the reduced pace of productivity gains has continued and suggests that average future output growth will likely be relatively slow.
Working Paper
Information and communications technology as a general-purpose technology: evidence from U.S industry data
Many people point to information and communications technology (ICT) as the key for understanding the acceleration in productivity in the United States since the mid-1990s. Stories of ICT as a 'general purpose technology' suggest that measured TFP should rise in ICT-using sectors (reflecting either unobserved accumulation of intangible organizational capital, spillovers, or both), but with a long lag. Contemporaneously, however, investments in ICT may be associated with lower TFP as resources are diverted to reorganization and learning. We find that U.S. industry results are consistent with ...
Journal Article
Information and communications technology as a general purpose technology: evidence from U.S. industry data
Many people point to information and communications technology (ICT) as the key for understanding the acceleration in productivity in the United States since the mid-1990s. Stories of ICT as a general purpose technology (GPT) suggest that measured total factor productivity (TFP) should rise in ICT-using sectors (reflecting either unobserved accumulation of intangible organizational capital, spillovers, or both), but with a long lag. Contemporaneously, however, investments in ICT may be associated with lower TFP as resources are diverted to reorganization and learning. We find that U.S. ...
Working Paper
The case of the missing productivity growth: or, does information technology explain why productivity accelerated in the United States but not the United Kingdom?
Solow's paradox has disappeared in the United States but remains alive and well in the United Kingdom. In particular, the U.K. experienced an information and communications technology (ICT) investment boom in the 1990s in parallel with the U.S., but measured total factor productivity has decelerated rather than accelerated in recent years. We ask whether ICT can explain the divergent TFP performance in the two countries. Stories of ICT as a 'general purpose technology' suggest that measured TFP should rise in ICT-using sectors (reflecting either unobserved accumulation of intangible ...
Working Paper
Puzzles in the Chinese stock market
Many companies on China's stock markets have separate, restricted classes of shares for domestic residents and foreigners. Other than who can own them, these shares are identical, but foreigners pay only about one-quarter the price paid by domestic residents. We show that plausible differences--about 4 percentage-points--in expected rates of return by foreign and domestic investors can account for the generally higher level and volatility of prices for domestic shares relative to foreign shares. We attribute low Chinese expected returns to the limited alternative investments available in ...
Working Paper
Are technology improvements contractionary?
We construct a measure of aggregate technology change, controlling for imperfect competition, varying utilization of capital and labor, and aggregation effects. On impact, when technology improves, input use falls sharply, and output may fall slightly. With a lag of several years, inputs return to normal and output rises strongly. These results are inconsistent with frictionless dynamic general equilibrium models, which generally predict that technology improvements are expansionary, with inputs and (especially) output rising immediately. However, the results are consistent with plausible ...
Working Paper
Are apparent productive spillovers a figment of specification error?
Using data on gross output for two-digit manufacturing industries, we find that an increase in the output of one manufacturing sector has little or no significant effect on the productivity of other sectors. Using value-added data, however, we confirm the results of previous studies which find that output spillovers instead appear large. We provide an explanation for these differences, showing why, with imperfect competition, the use of value-added data leads to a spurious finding of large apparent external effects.
Journal Article
Shifting data: a challenge for monetary policymakers
A familiar old saw about the conduct of monetary policy is that it's like trying to drive a car while looking only in the rearview mirror. The idea is that policymakers are trying to steer a course that will keep the economy close to full employment with low, stable inflation, while their only knowledge of the road ahead is based on data about the past. ; As if this situation weren't challenging enough, the rearview mirror sometimes gives a distorted reflection, in the sense that the data policymakers see at any one point in time are often later revised. This Economic Letter discusses a ...
Working Paper
Shocks and Adjustments
We develop a multisector model in which capital and labor are free to move across firms within each sector, but cannot move across sectors. To isolate the role of sectoral specificity, we compare our model with otherwise identical multisector economies with either economy-wide factor markets (as in Chari et al. 2000) or firm-specific factor markets (as in Woodford 2005). Sectoral specificity induces within-sector strategic substitutability and across-sector strategic complementarity in price setting. Our model can produce either more or less monetary non-neutrality than those other two ...