Nena Bloom
Dados Biográficos
| ID | 369814 |
|---|---|
| NOME | Nena Bloom |
| PRENOMES | Nena |
| SOBRENOME | Bloom |
| ASSINATURA | BLOOM N |
| AFILIAÇÕES | Stanford University |
| ORCID | 0000-0002-1600-7819 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 55 |
| TOTAL DE CITAÇÕES | 287 |
| TOTAL COMO AUTOR | 55 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2001 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 7 |
Wonder city
The Impact of Covid-19 on Productivity
We analyze the impact of Covid-19 on productivity using data from an innovative monthly firm survey that asks for quantitative impacts of Covid-19 on inputs and outputs. We find that total factor productivity (TFP) fell by up to 6% during 2020–2021. The overall impact combined large reductions in ‘within-firm’ productivity, with offsetting positive ‘between-firm’ effects as less productive sectors, and less productive firms within them, contracte…
Do Well Managed Firms Make Better Forecasts
We link new forecast and management data on over 20,000 firms to data on productivity in manufacturing and services. The panel survey was administered in the UK in July 2017 and November 2020, coinciding with two periods of considerable uncertainty from Brexit and Covid. We find that better-managed firms make more accurate forecasts for firm-level turnover and macro-level GDP. Uniquely, we show better-managed firms are also aware that they make m…
Remote Work, Employee Mix, and Performance
Remote Work, Employee Mix, and Performance
Remote Work, Employee Mix, and Performance
Free Time
Title I Pioneered the Subsidized Urban Megaproject
In a 1945 article for Life, Boston architect William Greeley called for local government “to destroy our own diseased tissues and by heroic willpower rebuild our community as a worthy competitor of
The impact of Geospatial Inquiry lessons on student interest in science and technology careers
Advances in online geospatial technologies (GST) have expanded access to K‐12 classrooms which has implications for the support teachers require to effectively integrate GSTs to promote learning. Previous studies have shown the impact of GST‐integrated lessons on student engagement, spatial thinking skills, and/or content knowledge; however, most of these studies have been small in scope and scale and frequently focus on the affordances of the te…
A People’s History of SFO
Journal Article A People’s History of SFO: The Making of the Bay Area and an Airport. By Eric Porter Get access A People’s History of SFO: The Making of the Bay Area and an Airport By Eric Porter (Oakland: University of California Press, 2023. 296 pp. Illustrations, notes, bibliography, index. $29.95.) Nicholas Dagen Bloom Nicholas Dagen Bloom Hunter College, New York, New York, USA [email protected] Search for other works by this author on:…
Long Social Distancing
Many Americans continued some forms of social distancing after the pandemic. This phenomenon is stronger among older persons, less educated individuals, and those who interact daily with persons at high risk from infectious diseases. Regression models fit to individual-level data suggest that social distancing lowered labor force participation by 2.4 percentage points in 2022, 1.2 points on an earnings-weighted basis. When combined with simple eq…
The Finance Uncertainty Multiplier
We show how real and financial frictions amplify, prolong, and propagate the negative impact of uncertainty shocks. We use a novel instrumentation strategy to address endogeneity in estimating the impact of uncertainty by exploiting differential firm exposure to exchange rate, policy, and energy price volatility. We show that financially constrained firms cut investment more than unconstrained firms following an uncertainty shock. We then build a…
The Evolution of Work from Home
Full days worked at home account for 28 percent of paid workdays among Americans 20-64 years old, as of mid-2023. That's about four times the 2019 rate and ten times the rate in the mid-1990s. We first explain why the big shift to work from home has endured rather than reverting to prepandemic levels. We then consider how work-from-home rates vary by worker age, sex, education, parental status, industry and local population density, and why it is…
The World Uncertainty Index
Teacher enactment of the Geospatial Inquiry cycle in classrooms following scaled up professional learning and development
The current study examined the effects of a nationally scaled up Professional Learning and Development (PLD) model on teachers’ classroom implementation of the Geospatial Inquiry instructional framework. Geospatial Inquiry is defined as: asking and answering a research question through the analysis and communication of data that is linked to a geographic location on, above, or near Earth. These data are often represented visually via maps and exp…
Why Working from Home Will Stick
COVID-19 drove a mass social experiment in working from home (WFH). We survey more than 30,000 Americans over multiple waves to investigate whether WFH will stick, and why. Our data say that 20 percent of full workdays will be supplied from home after the pandemic ends, compared with just 5 percent before. We develop evidence on five reasons for this large shift: better-than-expected WFH experiences, new investments in physical and human capital …
The Donut Effect of Covid-19 on Cities
Using data from the US Postal Service and Zillow, we quantify the effect of Covid-19 on migration patterns and real estate markets in US cities.We find three key results.First, within large US metro areas, households, businesses and real estate demand shift from central business districts (CBDs) to lower density suburbs and exurbs.We label this the "Donut Effect", reflecting the hollowing out of city centers and growth of suburban outer rings.Sec…
Trapped Factors and China’s Impact on Global Growth
After a recent increase in Chinese import competition, European firms increased innovation. We present and rationalise these patterns using ‘trapped factors’ at the micro level within a stylised equilibrium model of product-cycle trade and growth. Trade integration of the magnitude observed between the OECD and low-wage nations as a whole can considerably increase the long-run growth rate and welfare. In the short run exposed firms devote trapped…
The Unprecedented Stock Market Reaction to Covid-19
No previous infectious disease outbreak, including the Spanish Flu, has affected the stock market as forcefully as the COVID-19 pandemic. In fact, previous pandemics left only mild traces on the U.S. stock market. We use text-based methods to develop these points with respect to large daily stock market moves back to 1900 and with respect to overall stock market volatility back to 1985. We also evaluate potential explanations for the unprecedente…
Covid-Induced Economic Uncertainty
Assessing the economic impact of the COVID-19 pandemic is essential for policymakers, but challenging because the crisis has unfolded with extreme speed. We identify three indicators -stock market volatility, newspaper-based economic uncertainty, and subjective uncertainty in business expectation surveys -that provide real-time forward-looking uncertainty measures. We use these indicators to document and quantify the enormous increase in economic…
Economic uncertainty before and during the Covid-19 pandemic
Are Ideas Getting Harder to Find
Long-run growth in many models is the product of two terms: the effective number of researchers and their research productivity. We present evidence from various industries, products, and firms showing that research effort is rising substantially while research productivity is declining sharply. A good example is Moore's Law. The number of researchers required today to achieve the famous doubling of computer chip density is more than 18 times lar…
How States Shaped Postwar America
Rouse, James
James Rouse (1914–1996) was a leading American real estate developer and urban visionary of the mid‐twentieth century who believed deeply that the private sector, with targeted public subsidies, could both solve America's deepening urban crisis and tame suburban sprawl. His vision for a new era of private–public partnerships influenced urban policy in areas such as urban renewal, the regional shopping center, new towns, festival marketplaces, and…
Still renovating
Greg Suttor’s Still Renovating: A History of Canadian Social Housing Policy is a clear and deeply researched introduction to the complex and distinct history of Canadian social housing. Canadian so
Trade Induced Technical Change? The Impact of Chinese Imports on Innovation, IT and Productivity
We examine the impact of Chinese import competition on broad measures of technical change—patenting, IT, and TFP—using new panel data across twelve European countries from 1996 to 2007. In particular, we establish that the absolute volume of innovation increases within the firms most affected by Chinese imports in their output markets. We correct for endogeneity using the removal of product-specific quotas following China's entry into the World T…
Why Do Management Practices Differ across Firms and Countries
Economists have long puzzled over the astounding differences in productivity between firms and countries. In this paper, we present evidence on a possible explanation for persistent differences in productivity at the firm and the national level-namely, that such differences largely reflect variations in management practices. We have, over the last decade, undertaken a large survey research program to systematically measure management practices ac…
Does Management Matter in schools
Journal Article Does Management Matter in schools? Get access Nicholas Bloom, Nicholas Bloom Stanford University, Centre for Economic Performance, CEPR and NBER Search for other works by this author on: Oxford Academic Google Scholar Renata Lemos, Renata Lemos Cambridge University and Centre for Economic Performance Search for other works by this author on: Oxford Academic Google Scholar Raffaella Sadun, Raffaella Sadun Harvard University, Centre…
Are Ideas Getting Harder to Find
Long-run growth in many models is the product of two terms: the effective number of researchers and their research productivity. We present evidence from various industries, products, and firms showing that research effort is rising substantially while research productivity is declining sharply. A good example is Moore's Law. The number of researchers required today to achieve the famous doubling of computer chip density is more than 18 times lar…
Fluctuations in Uncertainty
Uncertainty is an amorphous concept. It reflects uncertainty in the minds of consumers, managers, and policymakers about possible futures. It is also a broad concept, including uncertainty over the path of macro phenomena like GDP growth, micro phenomena like the growth rate of firms, and noneconomic events like war and climate change. In this essay, I address four questions about uncertainty. First, what are some facts and patterns about economi…
The Evolution of Work from Home
Full days worked at home account for 28 percent of paid workdays among Americans 20-64 years old, as of mid-2023. That's about four times the 2019 rate and ten times the rate in the mid-1990s. We first explain why the big shift to work from home has endured rather than reverting to prepandemic levels. We then consider how work-from-home rates vary by worker age, sex, education, parental status, industry and local population density, and why it is…
A Toolkit of Policies to Promote Innovation
Economic theory suggests that market economies are likely to underprovide innovation because of the public good nature of knowledge. Empirical evidence from the United States and other advanced economies supports this idea. We summarize the pros and cons of different policy instruments for promoting innovation and provide a basic "toolkit" describing which policies are most effective according to our reading of the evidence. In the short run, R&D…
Patents, Real Options and Firm Performance
that patents have an economically and statistically significant impact on firm-level productivity and market value. While patenting feeds into market values immediately it appears to have a slower effect on productivity. This generates valuable real options because patents provide exclusive rights to develop new innovations, enabling firms to delay investments. Higher market uncertainty, which increases the value of real options, reduces the impa…
Modern Management
We use an innovative methodology to measure management practices in over 300 manufacturing firms in the UK. We then match this management data to production and energy usage information for establishments owned by these firms. We find that establishments in better managed firms are significantly less energy intensive. This effect is quantitatively substantial: going from the 25th to the 75th percentile of management practices is associated with a…
The Finance Uncertainty Multiplier
We show how real and financial frictions amplify, prolong, and propagate the negative impact of uncertainty shocks. We use a novel instrumentation strategy to address endogeneity in estimating the impact of uncertainty by exploiting differential firm exposure to exchange rate, policy, and energy price volatility. We show that financially constrained firms cut investment more than unconstrained firms following an uncertainty shock. We then build a…
Public Housing That Worked
In 1957 the goddess of “modern” housing, Catherine Bauer, declared public housing a “dreary deadlock” (Architectural Forum, June 1957), and those who followed her—sociologists, architectural critics, and historians—only swelled the chorus. Now Nicholas Dagen Bloom seeks to alter that verdict by arguing that at least in New York City public housing policy worked. Employing a partially chronological, partially topical structure, Bloom neatly unfold…
Measuring and Explaining Management Practices Across Firms and Countries
The Federal Icarus
Suburban Alchemy
Suburban Alchemy
Journal Article Suburban Alchemy: 1960s New Towns and the Transformation of the American Dream Get access Suburban Alchemy: 1960s New Towns and the Transformation of the American Dream. By Bloom Nicholas Dagen. (Columbus: Ohio State University Press, 2001. x, 333 pp. Cloth, $70.00, isbn0-8142-0874-6. Paper, $27.95, isbn0-8142-5075-0.) Paul H. Mattingly Paul H. Mattingly New York UniversityNew York, New York Search for other works by this author o…
Patents, Real Options and Firm Performance
that patents have an economically and statistically significant impact on firm-level productivity and market value. While patenting feeds into market values immediately it appears to have a slower effect on productivity. This generates valuable real options because patents provide exclusive rights to develop new innovations, enabling firms to delay investments. Higher market uncertainty, which increases the value of real options, reduces the impa…
Competition and Innovation
Public Life as Consumerism
Using digitized primary source materials in the classroom
Using digitized primary source materials with K–12 students makes learning content more engaging and relevant, and helps students develop a wide range of skills. This paper highlights the use of primary source materials in Colorado classrooms and provides a brief overview of what educators’ needs are in order to use digitized primary source materials more efficiently and effectively with students
Les villes nouvelles ne sont pas des banlieues. Les obstacles à la planification des cités-jardins américaines
Nicholas Dagen Bloom New Towns are not suburbs Obstacles to planning US garden cities During the twentieth century, the garden city model imported from Europe a century before spread across the United States without every satisfactorily achieving its goals of harmonious social and spatial coexistence. The New Town model took over after World War Two to restructure monotonous suburbs forming the urban sprawl. What was achieved never lived up to th…
Measuring and Explaining Management Practices Across Firms and Countries
Public Housing That Worked
In 1957 the goddess of “modern” housing, Catherine Bauer, declared public housing a “dreary deadlock” (Architectural Forum, June 1957), and those who followed her—sociologists, architectural critics, and historians—only swelled the chorus. Now Nicholas Dagen Bloom seeks to alter that verdict by arguing that at least in New York City public housing policy worked. Employing a partially chronological, partially topical structure, Bloom neatly unfold…
Modern Management
We use an innovative methodology to measure management practices in over 300 manufacturing firms in the UK. We then match this management data to production and energy usage information for establishments owned by these firms. We find that establishments in better managed firms are significantly less energy intensive. This effect is quantitatively substantial: going from the 25th to the 75th percentile of management practices is associated with a…
Why Do Management Practices Differ across Firms and Countries
Economists have long puzzled over the astounding differences in productivity between firms and countries. In this paper, we present evidence on a possible explanation for persistent differences in productivity at the firm and the national level-namely, that such differences largely reflect variations in management practices. We have, over the last decade, undertaken a large survey research program to systematically measure management practices ac…
Americans Do IT Better
US productivity growth accelerated after 1995 (unlike Europe's), particularly in sectors that intensively use information technologies (IT). Using two new micro panel datasets we show that US multinationals operating in Europe also experienced a “productivity miracle.” US multinationals obtained higher productivity from IT than non-US multinationals, particularly in the same sectors responsible for the US productivity acceleration. Furthermore, e…
The Organization of Firms Across Countries
We argue that social capital as proxied by trust increases aggregate productivity by affecting the organization of firms. To do this we collect new data on the decentralization of investment, hiring, production, and sales decisions from corporate headquarters to local plant managers in almost 4,000 firms in the United States, Europe, and Asia. We find that firms headquartered in high-trust regions are significantly more likely to decentralize. To…
Manhattan Projects
Does Management Matter? Evidence from India
A long-standing question is whether differences in management practices across firms can explain differences in productivity, especially in developing countries where these spreads appear particularly large. To investigate this, we ran a management field experiment on large Indian textile firms. We provided free consulting on management practices to randomly chosen treatment plants and compared their performance to a set of control plants. We fin…
Spatial Regulation in New York City/The Invention of Brownstone Brooklyn
Does Working from Home Work? Evidence from a Chinese Experiment
A rising share of employees now regularly engage in working from home (WFH), but there are concerns this can lead to “shirking from home.” We report the results of a WFH experiment at Ctrip, a 16,000-employee, NASDAQ-listed Chinese travel agency. Call center employees who volunteered to WFH were randomly assigned either to work from home or in the office for nine months. Home working led to a 13% performance increase, of which 9% was from working…
Trapped Factors and China's Impact on Global Growth
After a recent increase in Chinese import competition, European firms increased innovation. We present and rationalise these patterns using ‘trapped factors’ at the micro level within a stylised equilibrium model of product-cycle trade and growth. Trade integration of the magnitude observed between the OECD and low-wage nations as a whole can considerably increase the long-run growth rate and welfare. In the short run exposed firms devote trapped…
Fluctuations in Uncertainty
Uncertainty is an amorphous concept. It reflects uncertainty in the minds of consumers, managers, and policymakers about possible futures. It is also a broad concept, including uncertainty over the path of macro phenomena like GDP growth, micro phenomena like the growth rate of firms, and noneconomic events like war and climate change. In this essay, I address four questions about uncertainty. First, what are some facts and patterns about economi…
The Impact of Competition on Management Quality
We analyse the causal impact of competition on managerial quality and hospital performance. To address the endogeneity of market structure we analyse the English public hospital sector where entry and exit are controlled by the central government. Because closing hospitals in areas where the governing party is expecting a tight election race (“marginals”) is rare due to the fear of electoral defeat, we can use political marginality as an instrume…
Trade Induced Technical Change? The Impact of Chinese Imports on Innovation, IT and Productivity
We examine the impact of Chinese import competition on broad measures of technical change—patenting, IT, and TFP—using new panel data across twelve European countries from 1996 to 2007. In particular, we establish that the absolute volume of innovation increases within the firms most affected by Chinese imports in their output markets. We correct for endogeneity using the removal of product-specific quotas following China's entry into the World T…
Does Management Matter in schools
Journal Article Does Management Matter in schools? Get access Nicholas Bloom, Nicholas Bloom Stanford University, Centre for Economic Performance, CEPR and NBER Search for other works by this author on: Oxford Academic Google Scholar Renata Lemos, Renata Lemos Cambridge University and Centre for Economic Performance Search for other works by this author on: Oxford Academic Google Scholar Raffaella Sadun, Raffaella Sadun Harvard University, Centre…
Roberta Gold. When Tenants Claimed the City
Measuring Economic Policy Uncertainty
We develop a new index of economic policy uncertainty (EPU) based on newspaper coverage frequency. Several types of evidence—including human readings of 12,000 newspaper articles—indicate that our index proxies for movements in policy-related economic uncertainty. Our U.S. index spikes near tight presidential elections, Gulf Wars I and II, the 9/11 attacks, the failure of Lehman Brothers, the 2011 debt ceiling dispute, and other major battles ove…
Economics (28 obras) · Business (20 obras) · Political science (15 obras) · Geography (12 obras) · Economic growth (10 obras) · Economic Growth and Productivity (10 obras) · Productivity (10 obras) · Computer Science (9 obras) · History (9 obras) · Engineering (8 obras)