Results

Journal article

Journal of Law, Economics, and Organization:

Business groups as knowledge-based hierarchies of firms

We provide the first worldwide overview of the patterns of hierarchical differentiation across Business Groups (BGs), highlighting the coexistence of different hierarchical shapes. We show how the different shapes can ar...Read more...

Journal article

Transactions of the Institute of British Geographers:

Finding stars: mapping the geography of the world's scientific elites

This paper presents the first systematic city-level mapping of global scientific talent, analysing the top 200,000 star scientists across 3635 cities worldwide annually between 2019 and 2023. We use a novel Knowledge Gen...Read more...

Journal article

International Economics:

Reassessing EU comparative advantage: the role of technology

Based on a sufficient statistics approach, we show how the state of technology of European industries relative to the rest of the world can be empirically assessed in a way that is simple in terms of computation, parsimo...Read more...

Chapter

Immigration, diversity and innovation in cities and regions

in A Research Agenda for Migration and Innovation

This chapter investigates the interplay between immigrant diversity and innovation, emphasizing the urban and regional dimensions where these effects are most pronounced. Cities and urban areas are pivotal to the generat...Read more...

Journal article

Journal of International Economics:

Paper tiger? Chinese science and home bias in citations

We investigate the phenomenon of home bias in scientific citations, where researchers disproportionately cite work from their own country. We develop a benchmark for expected citations based on the relative size of count...Read more...

Journal article

American Economic Review:

Fighting climate change: international attitudes toward climate policies

This paper explores global perceptions and understanding of climate change and policies, examining factors that influence support for climate action and the impact of different types of information. We conduct large-scal...Read more...

Journal article

The Review of Economics and Statistics :

The value of managers' export experience: lessons from the Angolan civil war

We investigate how managers help firms grow by entering a new export market. We conduct an event study on the decision to export to Angola using data on Portuguese firms and workers. We evaluate the impact of the presenc...Read more...

Journal article

Annals of Economics and Statistics:

Proximity of firms to scientific production

Following Bergeaud et al. (2022), we construct a new measure of proximity between industrial sectors and public research laboratories. Using this measure, we explore the underlying network of knowledge linkages between s...Read more...

Journal article

The Review of Economic Studies:

Using disasters to estimate the impact of uncertainty

Uncertainty rises in recessions and falls in booms. But what is the causal relationship? We construct cross-country panel data on stock market returns to proxy for first- and second-moment shocks and instrument these wit...Read more...

CEP discussion paper

Firms in product space: adoption, growth and competition

Which products are potentially produced together? When demand for a product increases, which firms will supply it? Using multi-product production patterns within and across firms, we recover a continuous cost based dista...Read more...

CEP discussion paper

Rethinking revealed comparative advantage with micro and macro data

The Balassa's index of revealed comparative advantage does not necessarily reveal Ricardian comparative advantage. We propose an alternative sufficient statistics approach based on a quantitative standard trade model inc...Read more...

CEP discussion paper

Proximity of firms to scientific production

Following Bergeaud et al. (2022), we construct a new measure of proximity between industrial sectors and public research laboratories. Using this measure, we explore the underlying network of knowledge linkages between s...Read more...

Journal article

Management Science:

Information spillovers in experience goods competition

Trialing an experience good allows consumers to learn their value for the sampled good and also informs beliefs about their value for similar products. These demand-side information spillovers across products create a re...Read more...

CEP discussion paper

Knowledge spillovers from clean innovation. A tradeoff between growth and climate?

Innovation policy faces a tradeoff between growth and climate objectives when the knowledge spillover externality from clean innovation is low compared to other sectors. To make such a comparison, we use patent data to e...Read more...

CEP discussion paper

From public labs to private firms: magnitude and channels of R&D spillovers

Introducing a new measure of scientific proximity between private firms and public research groups and exploiting a multi-billion euro financing program of academic clusters in France, we provide causal evidence of spill...Read more...

CentrePiece article

Clean technologies for growth and equity

Public investment in developing energy sources that don?t cause climate change is a strategy for economic growth that could also contribute to the UK?s levelling up agenda, says Ralf Martin. His analysis indicates that s...Read more...

Blog

Vox EU:

Knowledge flows from public labs to private firms

How knowledge spillovers operate between academia and private firms remains an open question. Antonin Bergeaud, Arthur Guillouzouic, Emeric Henry and Clement Malgouyres find strong spillovers through the contracting, mob...Read more...

Journal article

Nature Communications:

The effect of Covid certificates on vaccine uptake, health outcomes, and the economy

In the COVID-19 pandemic many countries required COVID certificates, proving vaccination, recovery, or a recent negative test, to access public and private venues. We estimate their effect on vaccine uptake for France, G...Read more...

Journal article

International Journal of Human Computer Studies:

Multitasking while driving: a time use study of commuting knowledge workers to assess current and future uses

Commuting has enormous impact on individuals, families, organizations, and society. Advances in vehicle automation may help workers employ the time spent commuting in productive work-tasks or wellbeing activities. To ach...Read more...

CEP discussion paper

Structural change within versus across firms: evidence from the United States

We document the role of intangible capital in manufacturing firms' substantial contribution to non-manufacturing employment growth from 1977-2019. Exploiting data on firms' "auxiliary" establishments, we develop a novel ...Read more...

CEP discussion paper

How does working from home during Covid-19 affect what managers do? Evidence from time-use studies

We assess how the sudden and widespread shift to working from home during the pandemic impacted how managers allocate time throughout their working day. We analyze the results from an online time-use survey with data on ...Read more...

CEP discussion paper

Multitasking while driving: a time use study of commuting knowledge workers to access current and future uses

Commuting has enormous impact on individuals, families, organizations, and society. Advances in vehicle automation may help workers employ the time spent commuting in productive work-tasks or wellbeing activities. To ach...Read more...

CEP discussion paper

Knowledge spillovers from clean and emerging technologies in the UK

The UK government has committed to increase R&D support for clean technologies in an effort to meet its net-zero target by 2050. The opportunity cost of such programs crucially depends on the value of knowledge spillover...Read more...

Journal article

Research Policy :

No inventor is an island: social connectedness and the geography of knowledge flows in the US

Do informal social ties connecting inventors across distant places promote knowledge flows between them? To measure informal ties, we use a new and direct index of social connectedness of regions based on aggregate Faceb...Read more...

CEP discussion paper

Omnia Juncta in Uno*: foreign powers and trademark protection in Shanghai's concession era

We examine how trademark protection - a prevalent but underexplored intellectual property right - affects international firms and market outcomes in an emerging economy. Exploiting the unexpected introduction of China's ...Read more...

Journal article

Human-Computer Interaction:

How does working from home during Covid-19 affect what managers do? Evidence from time-use studies

In this research we explore the effects of the forced Work-from-home arrangement during the Covid-19 pandemic on managers. We assess how the sudden and widespread shift to working from home during the pandemic impacted h...Read more...

CEP discussion paper

Business groups as knowledge-based hierarchies of firms

Hierarchical differentiation is a cornerstone of the organizing process. In this paper, we do three things. First, exploiting a newly assembled dataset, we provide the first worldwide overview of the patterns of hierarch...Read more...

CEP discussion paper

Firm export responses to tariff hikes

We study how firms react to unexpected increases in import tariffs. We identify our results from a sudden removal of American preferential tariffs applied on Argentine imports under the Generalized System of Preferences,...Read more...

Journal article

Management Science:

Stars and brokers: knowledge spillovers among medical scientists

This paper estimates the heterogeneity in peer effects among research scientists in terms of network position. I propose a new measure, brokerage degree, that determines the extent to which a scientist depends on a coaut...Read more...

CEP discussion paper

No inventor is an island: social connectedness and the geography of knowledge flows in the US

Do informal social ties connecting inventors across distant places promote knowledge flows between them? To measure informal ties, we use a new and direct index of social connectedness of regions based on aggregate Faceb...Read more...

Journal article

Review of Industrial Organization:

The gravity of intermediate goods

One of the puzzles of the gravity literature is the persistent effect of distance on trade flows, despite the dramatic fall in trade costs during the last few decades (Disdier and Head in Rev Econ Stat 90(1):37?48, 2008)...Read more...

CEP discussion paper

Environmental preferences and technological choices: is market competition clean or dirty?

We investigate the effects of consumers' environmental concerns and market competition on firms' decisions to innovate in 'clean' technologies. Agents care about their consumption and environmental footprint; firms pursu...Read more...

Journal article

Quarterly Journal of Economics:

Measuring aggregate price indices with taste shocks: theory and evidence for CES preferences

We develop an approach to measuring the cost of living for CES preferences that treats demand shocks as taste shocks that are equivalent to price shocks. In the presence of relative taste shocks, the Sato-Vartia price in...Read more...

CEP discussion paper

The best versus the rest: divergence across firms during the global productivity slowdown

We document that labor productivity of the globally most productive firms ? the ?frontier? ? has diverged from all other firms ? the ?rest? ? throughout the 2000s. This divergence remains after controlling for capital in...Read more...

Journal article

The Quarterly Journal of Economics:

The unequal gains from product innovations: evidence from the US retail sector

This article examines how product innovations led to inflation inequality in the United States from 2004 to 2015. Using scanner data from the retail sector, I find that annual inflation for retail products was 0.661 (std...Read more...

Journal article

Review of Economic Studies:

Carry-along trade

Large multi-product firms dominate international trade flows. This paper documents new facts about multi-product manufacturing exporters that are not easily reconciled with existing multi-product models. Using novel link...Read more...

Journal article

Journal of Political Economy:

Monopolistic competition and optimum product diversity under firm heterogeneity

Empirical work has drawn attention to the high degree of productivity differences within industries and their role in resource allocation. This paper examines the allocational efficiency of such markets. Productivity dif...Read more...

CentrePiece article

Threats to scientific progress, past and present

A US boycott of Chinese researchers, as threatened by the Trump administration, could stifle scientific progress and technological innovation. That is the concern of Alessandro Iaria, Carlo Schwarz and Fabian Waldinger, ...Read more...

CEP discussion paper

Geography, ties and knowledge flows: evidence from citations in mathematics

Using data on academic citations, career and educational histories of mathematicians, and disaggregated distance data for the world's top 1000 math departments, we study how geography and ties affect knowledge flows amon...Read more...

CEP discussion paper

Managing trade: evidence from China and the US

We study how management practices shape export performance using matched production-trade-management data for Chinese and American firms and a randomized control trial in India. Better managed firms are more likely to ex...Read more...

Journal article

Journal of Economic Literature:

Global firms

Research in international trade has changed dramatically over the last twenty years, as attention has shifted from countries and industries towards the firms actually engaged in international trade. The now-standard hete...Read more...

Journal article

Research in Economics:

Monopolistic competition and optimum product selection: why and how heterogeneity matters

After some decades of relative oblivion, the interest in the optimality properties of monopolistic competition has recently re-emerged due to the availability of an appropriate and parsimonious framework to deal with fir...Read more...

CEP discussion paper

Product diversification in Indian manufacturing

The presence of global value chains challenges the neoclassical idea of the firm since it implies firms are not monolithic but are rather interdependent on the larger economic environment. Examining establishments, the s...Read more...

CEP discussion paper

Frontier knowledge and scientific production: evidence from the collapse of international science

We show that WWI and the subsequent boycott against Central scientists severely interrupted international scientific cooperation. After 1914, citations to recent research from abroad decreased and paper titles became les...Read more...

CEP discussion paper

The hospital as a multi-product firm: the effect of hospital competition on value-added indicators of clinical quality

There is increasing international interest in using Patient Reported Outcome Measures (PROMs) to assess health care provider performance. PROMs are a fundamental advance on existing indicators of health care quality in t...Read more...

Journal article

Journal of Urban Economics:

Sorting and agglomeration economies in French economics departments

Are agglomeration and peer effects at stake in academic research? To tackle this question, we study how departments? characteristics affect the quantity and quality of academics? publications in economics in France, cont...Read more...

CEP discussion paper

Multi-product firms and product quality

We examine the global operations of multi-product firms. We present a flexible heterogeneous-firm trade model with either limited or strong scope for quality differentiation. Using customs data for China during 2002-2006...Read more...

CEP discussion paper

The diffusion of knowledge via managers' mobility

Better managers and managerial practices lead to better firm performance. Yet, little is known about what happens when managers move across firms. Does a firm hiring a good manager improve its performance? If yes is ther...Read more...

Journal article

Journal of International Economics:

Multi-product firms and product quality

We examine the global operations of multi-product firms. We present a flexible heterogeneous-firm trade model with either limited or strong scope for quality differentiation. Using customs data for China during 2002?2006...Read more...

CentrePiece article

High-speed rail in China

Encouraging innovation is a perennial policy goal ? and one common approach is to promote the adoption of foreign technology. Yatang Lin and colleagues examine the impact of China?s technology transfer policy, which has ...Read more...

CEP discussion paper

Colocation and knowledge diffusion: evidence from million dollar plants

This paper uses the entry of large corporations into U.S. counties during the 1980s and 1990s to analyse the effect of plant opening on knowledge spillovers to local inventors. We use a difference-in-differences identifi...Read more...

CEP discussion paper

Product switching and the business cycle

This paper explores role of product adding and dropping within manufacturing firms over the business cycle. While a substantial body of work has explored the importance of the extensive margins of firm entry and exit in ...Read more...

CEP discussion paper

Global firms

Research in international trade has changed dramatically over the last twenty years, as attention has shifted from countries and industries towards the firms actually engaged in international trade. The now-standard hete...Read more...

CEP discussion paper

Swimming upstream: input-output linkages and the direction of product adoption

Multiproduct firms dominate production, and their product turnover contributes substantially to aggregate growth. Firms continually adapt their product mix, but what determines which products firms expand into? Theories ...Read more...

Journal article

Research Policy:

Do inventors talk to strangers? On proximity and collaborative knowledge creation

This paper examines the characteristics of the collaborations between inventors in the United Kingdom (UK) by looking at what types of proximities - geographic, organisational, cognitive, social, and cultural-ethnic - be...Read more...

CEP discussion paper

International technology transfer and domestic innovation: evidence from the high-speed rail sector in China

How does the transfer of advanced technology spur innovation in developing countries? This paper exploits the large-scale introduction of high-speed railway (HSR) technology into China in 2004 as a natural experiment to ...Read more...

Journal article

The Economic Journal:

Income and population growth

Do populations grow as countries become richer? In this study we estimate the effects on population growth of shocks to national income that are plausibly exogenous and unlikely to be driven by technological change. For ...Read more...

Journal article

The Review of Economics and Statistics:

Intermediaries in international trade: products and destinations

This paper examines the factors that give rise to intermediaries in exporting and explores the implications for trade volumes. Export intermediaries such as wholesalers serve different markets and export different produc...Read more...

CEP occasional paper

Knowledge-based hierarchies: using organizations to understand the economy

We argue that incorporating the decision of how to organize the acquisition, use, and communication of knowledge into economic models is essential to understand a wide variety of economic phenomena. We survey the literat...Read more...

CentrePiece article

Wikipedia: the value of open content production

Without the `spillover effects? of open content production, the growth in Wikipedia editing activity between 2002 and 2010 would have been halved. That is the central finding of research by Aleksi Aaltonen and Stephan Se...Read more...

CEP discussion paper

Education and health knowledge: evidence from UK compulsory schooling reforms

We investigate if there is a causal link between education and health knowledge using data from the 1984/85 and 1991/92 waves of the UK Health and Lifestyle Survey (HALS). Uniquely, the survey asks respondents what they ...Read more...

CEP discussion paper

Quantifying spillovers in open source content production: evidence from Wikipedia

Using detailed edit-level data over eight years across a large number of articles on Wikipedia, we find evidence for a positive spillover effect in editing activity. Cumulative past contributions, embodied by the current...Read more...

SERC/Urban and Spatial Programme Discussion Paper

Do Inventors Talk to Strangers? On Proximity and Collaborative Knowledge Creation

This paper investigates how physical, organisational, institutional, cognitive, social, and ethnic proximities between inventors shape their collaboration decisions. Using a new panel of UK inventors and a novel identifi...Read more...

CEP discussion paper

Monopolistic Competition and Optimum Product Selection: Why and How Heterogeneity Matters

After some decades of relative oblivion, the interest in the optimality properties of monopolistic competition has recently re-emerged due to the availability of an appropriate and parsimonious framework to deal with fir...Read more...

CEP discussion paper

What are the Channels for Technology Sourcing? Panel Data Evidence from German Companies

Innovation processes within corporations increasingly tap into international technology sources, yet little is known about the relative contribution of different types of innovation channels. We investigate the effective...Read more...

CEP discussion paper

Brain Drain or Brain Gain? Technology Diffusion and Learning On-the-job

This paper develops a theory of technology transfer when technology is embodied in human capital and learning requires on-the-job communication between managers and workers. Patterns of knowledge diffusion depend on wher...Read more...

CEP discussion paper

On the Measurement of Trade Costs: Direct vs. Indirect Approaches to Quantifying Standards and Technical Regulations

In this article, we review the literature on the measurement of trade costs in international trade with a special emphasis on nontariff measures and in particular on standards and technical regulations. We distinguish `d...Read more...

CEP discussion paper

Market Size, Competition, and the Product Mix of Exporters

We build a theoretical model of multi-product firms that highlights how competition across market destinations affects both a firm's exported product range and product mix. We show how tougher competition in an export ma...Read more...

CEP discussion paper

Intermediaries in International Trade: Direct Versus Indirect Modes of Export

This paper examines the factors that give rise to intermediaries in exporting and explores the implications for trade volumes. Export intermediaries such as wholesalers serve different markets and export different produc...Read more...

SERC/Urban and Spatial Programme Discussion Paper

The Bright Side of Social Capital: How 'Bridging' Makes Italian Provinces More Innovative

Social capital has remained relatively underexplored in innovation literature. Existing studies have failed to reach a consensus on its impact on local innovative performance: some empirical analyses emphasize a positive...Read more...

CEP discussion paper

A Task-Based Approach to Organization: Knowledge, Communication and Structure

We bridge a gap between organizational economics and strategy research by developing a task-based approach to analyze organizational knowledge, process and structure, and deriving testable implications for the relation b...Read more...

CEP discussion paper

Spreading the Word: Geography, Policy and Knowledge Spillovers

Using new data on citations to university patents and scientific publications, we study how geography affects university knowledge spillovers. Citations to patents decline sharply with distance up to about 150 miles and ...Read more...

SERC/Urban and Spatial Programme Discussion Paper

The Impact of University Research on Corporate Patenting

This paper analyses the association between the number of patenting manufacturing firms and the quantity and quality of relevant university research across UK postcode areas. We show that different measures of research `...Read more...

CEP discussion paper

Trade as an Engine of Creative Destruction: Mexican Experience with Chinese Competition

This paper exploits the surge in Chinese exports from 1994 to 2004 as a natural experiment to evaluate the effects of a unilateral low wage trade and competition shock to producers in Mexico. We find that this shock caus...Read more...

SERC/Urban and Spatial Programme Discussion Paper

Stars and Comets: An Exploration of the Patent Universe

The analysis of patent and citation data has become a popular source of evidence on localized knowledge spillovers and innovation. Nevertheless, an aspect has been overlooked: the patent distribution across inventors is ...Read more...

CEP discussion paper

The Margins of US Trade

Recent research in international trade emphasizes the importance of firms? extensive margins for understanding overall patterns of trade as well as how firms respond to specific events such as trade liberalization. In th...Read more...

CEP discussion paper

Product Market Deregulation and the U.S. Employment Miracle

We consider the dynamic relationship between product market entry regulation and equilibrium unemployment. The main theoretical contribution is combining a job matching model with monopolistic competition in the goods ma...Read more...

CEP discussion paper

Is Distance Dying at Last? Falling Home Bias in Fixed Effects Models of Patent Citations

We examine the ?home bias? of international knowledge spillovers as measured by the speed of patent citations (i.e. knowledge spreads slowly over international boundaries). We present the first compelling econometric evi...Read more...

CEP discussion paper

Multi-Product Firms and Trade Liberalization

This paper develops a general equilibrium model of multi-product firms and analyzes their behavior during trade liberalization. Firm productivity in a given product is modeled as a combination of firm-level ?ability? and...Read more...

CEP discussion paper

An R&D-Based Model of Multi-Sector Growth

We develop a multi-sector general equilibrium model in which productivity growth is driven by the production of sector-specific knowledge. In the model, we find that long run differences in total factor productivity grow...Read more...

CEP discussion paper

Multi-Product Firms and Product Switching

This paper examines the frequency, pervasiveness and determinants of product switching among U.S. manufacturing firms. We find that two-thirds of firms alter their mix of five-digit SIC products every five years, that on...Read more...

CEP discussion paper

Basic Research and Sequential Innovation

The commercial value of basic knowledge depends on the arrival of follow-up developments mostly from outside the boundaries of the inventing firm. Private returns would depend on the extent the inventing firm internalize...Read more...

CEP discussion paper

Products and Productivity

Firms' decisions about which goods to produce are often made at a more disaggregate level than the data observed by empirical researchers. When products differ according to production technique or the way in which they e...Read more...

CEP discussion paper

How Does Product Market Competition Shape Incentive Contracts?

This paper studies the effect of product market competition on the explicit compensation packages that firms offer to their CEOs, executives and workers. We use a large sample of both traded and non-traded UK firms and e...Read more...

CEP discussion paper

Product Market Competition Returns to Skill and Wage Inequality

This paper shows that increasing product market competition can have a direct impact on the employment relationship and on wage inequality. I develop a simple model in which an increase in product market competition incr...Read more...

CEP discussion paper

Foreign Ownership and Productivity: New Evidence from the Service Sector and the R&D Lab

This paper examines the relationship between foreign ownership and productivity, paying particular attention to two issues neglected in the existing literature ? the role of multinationals in service sectors and the impo...Read more...

CEP discussion paper

Executive Compensation and Product Market Competition

The aim of this paper is to study the effects of product market competition on the explicit compensation packages that firms offer to their executives. In order to measure the net effect of competition we use two differe...Read more...

CEP discussion paper

Product Choice and Product Switching

This paper develops a model of endogenous product selection by firms. The theory is motivated by new evidence we present on the importance of product switching by U.S. manufacturers. Two-thirds of continuing firms change...Read more...

CEP discussion paper

Productivity Convergence and Foreign Ownership at the Establishment Level

This paper investigates whether there is convergence in Total Factor Productivity towards the technological frontier at the establishment level. We find convergence to the frontier is statistically and quantitatively imp...Read more...

CEP discussion paper

Digital Goods and the New Economy

Digital goods are bitstrings, sequences of 0s and 1s, which have economic value. They are distinguished from other goods by five characteristics: digital goods are nonrival, infinitely expansible, discrete, aspatial, and...Read more...

CEP discussion paper

Matching Demand and Supply in a Weightless Economy: Market-Driven Creativity With and Without IPRs

Many cultural products have the same nonrival nature as scientific knowledge. They therefore face identical difficulties in creation and dissemination. One traditional view says market failure is endemic: societies toler...Read more...

CEP discussion paper

Spatial Agglomeration Dynamics

This paper develops a model of economic growth and activity locating endogenously on a 3-dimensional featureless global geography. The same economic forces influence simulataneously growth, convergence, and spatial agglo...Read more...

CEP discussion paper

Product Standards, Trade Disputes and Protectionism

Trade disputes over national product standards are a growing source of tension in the international trading system. The usual pattern is that a country introduces a new product standard for all sales of a good in its loc...Read more...

CEP discussion paper

Per Capita Income Demand for Variety, and International Trade: Linder Reconsidered

We analyse a monopolistically competitive model of international trade where goods must be consumed in indivisible amounts. The number of varieties that enter a consumer's optimal consumption bundle is increasing in the...Read more...