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Working Paper
Missing Growth from Creative Destruction
Statistical agencies typically impute inflation for disappearing products from the inflation rate for surviving products. As some products disappear precisely because they are displaced by better products, inflation may be lower at these points than for surviving products. As a result, creative destruction may result in overstated inflation and understated growth. We use a simple model to relate this ?missing growth? to the frequency and size of various kinds of innovations. Using U.S. Census data, we then apply two ways of assessing the magnitude of missing growth for all private nonfarm ...
Journal Article
How Does Business Dynamism Link to Productivity Growth?
The rate of business turnover has declined since the late 1970s, which some argue has hampered growth in innovation and productivity. This sounds like a plausible contributor to lackluster economic growth, but the connection between business turnover and productivity is more subtle. First, while business turnover has steadily declined over the past 35 years, aggregate productivity growth has not. Second, even when business starts were at historical highs, existing firms lost very little market share to new firms. This suggests that older firms are just as innovative as newcomers.
Journal Article
Nonmanufacturing as an Engine of Growth
In official statistics, manufacturing is the top contributor to U.S. productivity growth despite its shrinking share of employment. However, official numbers tend to understate growth among new producers that improve on existing producers, which is more prevalent outside of manufacturing. Accounting for such missing productivity growth shows that it plays a larger role in sectors such as retail trade and services. Also, the relative contribution of manufacturing to productivity growth has dropped significantly. These findings suggest that nonmanufacturing may be an increasingly important ...
Working Paper
Productivity Slowdown: Reducing the Measure of Our Ignorance
Growth accounting suggests that the bulk of the post-2004 slowdown in output growth in the U.S. is attributed to a residual called TFP. In this paper we provide a tractable accounting framework with firm heterogeneity to link this residual to innovations, markup dispersion, and potential measurement errors. Theories of creative destruction offer rich testable predictions of how the quality upgrading of products, the process efficiency of different firms, and markup dispersion in the market interact and therefore constitute a key approach to shed light on the slowdown in TFP growth. Surveying ...
Journal Article
What's Holding Back Business Formation?
The pace of business start-ups in the United States has declined over the past few decades. Economic theory suggests that business creation depends on the available workforce, and data analysis supports this strong link. By contrast, the relationship between start-ups and labor productivity is less well-defined, in part because entrepreneurs face initial costs that rise with productivity, specifically their own lost income from alternative employment. Overall, policies that incorporate improving labor availability may help to boost new business growth.
Journal Article
Does Working from Home Boost Productivity Growth?
An enduring consequence of the COVID-19 pandemic is a notable shift toward remote and hybrid work. This has raised questions regarding whether the shift had a significant effect on the growth rate of U.S. productivity. Analyzing the relationship between GDP per hour growth and the ability to telework across industries shows that industries that are more adaptable to remote work did not experience a bigger decline or boost in productivity growth since 2020 than less adaptable industries. Thus, teleworking most likely has neither substantially held back nor boosted productivity growth.
Working Paper
The Impact of COVID on Potential Output
The level of potential output is likely to be subdued post-COVID relative to its previous estimates. Most clearly, capital input and full-employment labor will both be lower than they previously were. Quantitatively, however, these effects appear relatively modest. In the long run, labor scarring could lead to lower levels of employment, but the slow pre-recession pace of GDP growth is unlikely to be substantially affected.
Working Paper
ChatMacro: Evaluating Inflation Forecasts of Generative AI
Recent research suggests that generic large language models (LLMs) can match the accuracy of traditional methods when forecasting macroeconomic variables in pseudo out-of-sample settings generated via prompts. This paper assesses the out-of-sample forecasting accuracy of LLMs by eliciting real-time forecasts of U.S. inflation from ChatGPT. We find that out-of-sample predictions are largely inaccurate and stale, even though forecasts generated in pseudo out-of-sample environments are comparable to existing benchmarks. Our results underscore the importance of out-of-sample benchmarking for LLM ...
Journal Article
Labor Productivity in a Pandemic
U.S. labor productivity has grown quickly during the pandemic compared with the past decade. However, this rapid pace is unlikely to be sustained. Similar to the Great Recession, the primary reasons for strong productivity growth now are cyclical effects that are likely to unwind as the economy continues to recover. For example, the number of workers has fallen, so capital per worker has risen—raising labor productivity in the short term. What effect the pandemic itself might have on productivity remains uncertain.
Working Paper
BLP Estimation Using Laplace Transformation and Overlapping Simulation Draws
We derive the asymptotic distribution of the parameters of the Berry et al. (1995, BLP) model in a many markets setting which takes into account simulation noise under the assumption of overlapping simulation draws. We show that, as long as the number of simulation draws R and the number of markets T approach infinity, our estimator is ?m = ?min(R,T) consistent and asymptotically normal. We do not impose any relationship between the rates at which R and T go to infinity, thus allowing for the case of R