Results

CEP discussion paper

A double-differences approach to inference in regression discontinuity designs with a discrete running variable

We present a new approach to nonparametric inference in regression discontinuity designs where the running variable is discrete and may have few support points. The approach is based on an intuitive and comparatively wea...Read more...

CentrePiece article

Maritime chokepoints

World trade remains dangerously dependent on a handful of shipping lanes...Read more...

CentrePiece article

Tariff confusion

The way that US tariffs were announced doubled their negative impact...Read more...

CEP discussion paper

Quantifying non-tariff barriers: Brexit, input sourcing and firm performance

How successful is European integration in removing non-tariff trade barriers? We study how Brexit affected UK firms' input sourcing and sales. The post-Brexit Trade and Cooperation Agreement (TCA) reduced sales and input...Read more...

CEP discussion paper

Organizing expertise with externalities: evidence from primary care

Many modern organizations use knowledge hierarchies, where frontline workers try to resolve tasks and pass those they cannot resolve to experts. But the implications of this organization of expertise are not well underst...Read more...

Journal article

International Economic Review:

Scientific isolation? The consequences of Trump's China initiative on Chinese research

The 2018 China Initiative by the Trump administration complicated procedures and reduced funding for US-China research collaborations. Using Scopus data, we analyze its impact on Chinese research. We find that it signifi...Read more...

Blog

VoxEU:

Tariff confusion

The year 2025 was unprecedented in the frequency, complexity, and volatility of US trade policy interventions. This column uses a new database tracking US tariff announcements during the year to show that confusion about...Read more...

Journal article

Review of International Economics:

Value co-creation and value capture in digital innovation ecosystems: a multiple case study in the agrifood sector

We use a large episode of trade liberalization in Spain to test a rich set of channels linking trade and markups. The effect of reductions in import tariffs on firm-level and aggregate markups is pro-competitive, but the...Read more...

CEP discussion paper

Dynamic effects of trade

The existence of aggregate welfare gains from trade is one of the classic insights from international economics. However, these conventional welfare gains are static, in the sense that they take existing factor supplies ...Read more...

Journal article

Journal of Environmental Economics and Management:

Trade and the scopes of pollution: evidence from China?s world market integration

Although the environmental impact of trade has been a long-standing concern, there is still scant evidence on the channels through which international market access affects pollution. We exploit the unique episode of Chi...Read more...

Blog

VoxTalks:

Tariff Confusion (podcast)

If you run a business that exports to the United States, how big is the tariff you have to pay? In 2025 that question was hard to answer. Between February and December, 53 separate announcements introduced, delayed, rein...Read more...

Blog

LSE Management:

How America out-deindustrialised Europe

Despite the prevailing narrative of Western deindustrialisation as one of a rigid Europe and a dynamic America, Richard Baldwin, Saul Estrin, and Bob Hancke argue that the comparison of the EU with the US turns this narr...Read more...

Blog

Bloomberg Trumponomics (podcast):

Are We Being Priced Out of Happiness?

Americans are spending less time with friends, nights out are getting more expensive and even major sporting events are becoming harder to afford. Stephanie Flanders speaks with Bloomberg reporter Ben Steverman and econo...Read more...

Journal article

Regional Science and Urban Economics:

Ports, technology and inter-city trade: The economics and geopolitics of evolving maritime transport networks

Maritime transport remains the backbone of global trade, yet the port and shipping network that carries it has been transformed by containerization and related technological advances. Drawing on newly available granular ...Read more...

Journal article

Regional Science and Urban Economics:

Ports, technology and inter-city trade: the economics and geopolitics of evolving maritime transport networks

Maritime transport remains the backbone of global trade, yet the port and ship- ping network that carries it has been transformed by containerization and related technological advances. Drawing on newly available granula...Read more...

Blog

LSE Business Review:

World trade remains dangerously dependent on a handful of shipping lanes

The conflict in Iran has been reignited by disagreements about control of a critical shipping lane. But the Strait of Hormuz is not the only chokepoint making global trade vulnerable. Ferdinand Rauch, Stephan Maurer and ...Read more...

CEP discussion paper

Ports, technology and inter-city trade: the economics and geopolitics of evolving maritime transport networks

Maritime transport remains the backbone of global trade, yet the port and shipping network that carries it has been transformed by containerization and related technological advances. Drawing on newly available granular ...Read more...

CEP discussion paper

Trade and the scopes of pollution: evidence from China's world market integration

Although the environmental impact of trade has been a long-standing concern, there is still scant evidence on the channels through which international market access affects pollution. We exploit the unique episode of Chi...Read more...

Journal article

American Economic Journal: Macroeconomics:

Import liberalization as export destruction? Evidence from the United States

In trade models with scale economies import liberalization reduces exports within industries by shrinking real market potential. We find this export destruction mechanism reduced US export growth following the permanent ...Read more...

CEP discussion paper

International trade in an uncertain world

We develop a tractable quantitative model of international trade in which agents make bilateral investments in resilience under general equilibrium uncertainty. Under both complete and incomplete financial markets, we sh...Read more...

CEP discussion paper

Tariff confusion

US trade policy in 2025 was unprecedented in the frequency, complexity and volatility of tariff announcements. This paper presents evidence that the resulting policy environment reduced trade flows because of confusion o...Read more...

Blog

LSE British Politics:

Post-Brexit trade policy hit supply chains and workers

After Brexit, firms in the UK found their supply chains disrupted. Holger Breinlich, Elsa Leromain and Martina Magli show that subsequent declines in trade led to less employment and lower pay for workers - with firms im...Read more...

CentrePiece article

My must-read paper

Discover Swati Dhingra's recommended reading on trade economics...Read more...

CentrePiece article

Brexit has been an economic failure: here's the evidence

Putting up trade barriers has made the UK poorer...Read more...

Blog

LSE Business Review:

Brexit shows how firms react when restrictions are placed on the way they reach customers

Brexit changed how British firms could sell services in the European Union. By studying how companies reacted, Holger Breinlich and Martina Magli show that many implemented workarounds, such as setting up affiliates abro...Read more...

Blog

LSE British Politics:

Brexit has been an economic failure

Putting up trade barriers, higher import prices and uncertainty have made the UK poorer. Thomas Sampson provides the evidence showing how Brexit has negatively affected the UK's economy....Read more...

Journal article

Organization Science:

The cybernetic teammate: a field experiment on generative AI and teamwork

We examine how artificial intelligence (AI) impacts three core pillars of collaboration?performance enhancement, expertise integration, and social engagement?through a preregistered field experiment with 791 professional...Read more...

CEP discussion paper

What happens in Paris, does not stay in Paris: trade fairs and search and matching frictions

Search and matching frictions keep firms from forming international trade links. Trade fairs are a common, often subsidized remedy, yet causal evidence is scarce. We study Hungarian firms at the 1900 Paris World Exhibiti...Read more...

Journal article

Journal of International Economics:

How to grow an invoicing currency: micro evidence from Argentina

We study the internationalization of the Chinese renminbi (RMB) leveraging a unique policy experiment. In 2023, amid a dollar shortage, Argentina expanded a currency swap line with China. The share of imports from China ...Read more...

Journal article

American Economic Review:

Leaders in social movements: evidence from unions in Myanmar

Social movements are catalysts for crucial institutional changes. To succeed, they must coordinate members' views (consensus building) and actions (mobilization). We study union leaders within Myanmar's burgeoning labor ...Read more...

CEP discussion paper

Counting the costs: a quantitative assessment of Brexit?s effect on UK regional economies

This paper examines the implications of the EU-UK Trade and Cooperation Agreement (TCA) using a dynamic spatial general equilibrium model. Unlike previous studies that primarily projected potential impacts of Brexit base...Read more...

CEP discussion paper

Mind the break-up: when policy disrupts firms' supply chains

This paper examines how policy-induced supply-chain shocks affect firms? performances, using the UK-EU Trade and Cooperation Agreement (TCA) as a source of exogenous variation. Using UK microdata on firm-level goods and ...Read more...

CEP discussion paper

Should we stay or should we go? Firms? decision on services mode of supply

Services account for one-third of global trade, yet little is known about the impact of trade restrictions on services trade. To make progress in this area, it is crucial to understand through which modes services are tr...Read more...

Journal article

Journal of International Economics:

The US-China trade war creates jobs (elsewhere)

We examine the indirect effects of the 2018-2019 US-China trade war on Brazil?s labor market. We construct a measure of regional exposure to the trade conflict using industry-specific tariff changes and the sectoral empl...Read more...

Blog

Transform work:

Transform work with Raffaella Sadun, Professor of Business Administration at Harvard Business School (podcast)

Raffaella's work sits at the intersection of economics, leadership, and the future of work. Drawing on large-scale data and real-world field experiments inside major companies, she explores how hybrid work is reshaping l...Read more...

Journal article

Economica:

Defining the geographical level of competition: a taxonomy of industry tradability

The paper develops a taxonomy of industry tradability to define the geographical level at which competition takes place. First, it creates a novel dataset that combines production and international trade data for both go...Read more...

CEP discussion paper

Sticky gravity

International trade flows show strong persistence over time. Standard static gravity models cannot rationalize this persistence and lack a micro-foundation for including lagged trade flows as a determinant of current tra...Read more...

CEP discussion paper

Cocaine goes bananas: global spillovers from an illicit supply shock

We study how a sharp expansion in Colombian cocaine production propagated internationally through global trade networks, generating substantial social costs. In Colombia, the production surge increased homicide rates by ...Read more...

Blog

Vox EU:

Tall buildings lead to more compact and productive cities

Land-use regulations, including height limits, affect housing affordability and urban productivity. This column analyses over 11,000 urban agglomerations and 300,000 tall buildings to explore the effect of height restric...Read more...

CEP discussion paper

Growth insured: export credit insurance and trade

We estimate the causal effect of short-term export credit insurance (ECI) on firm-level exports using administrative data from China?s export credit agency merged with customs and tax records. Exploiting quasi-random var...Read more...

Journal article

Spatial Economic Analysis:

Digital network centrality and the structure of goods trade

This paper studies how digital infrastructure is associated with the spatial structure of international trade in goods. We embed data availability into a structural gravity framework, conceptualising it as an information...Read more...

CEP discussion paper

Digital network centrality and the structure of goods trade

This paper studies how digital infrastructure is associated with the spatial structure of international trade in goods. We embed data availability into a structural gravity framework, conceptualizing it as an information...Read more...

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...

CEP discussion paper

The economics of tariffs

A central insight from neoclassical economics is that international trade operates like an improvement in production technology. It generates mutual aggregate welfare gains for countries as a whole, but creates winners a...Read more...

CEP discussion paper

Exchange-rate pass-through and invoicing currency choice in international production networks

We study exchange-rate pass-through and currency choice in international transactions, focusing on bilateral bargaining power in relationships between domestic buyers and foreign suppliers. Using detailed transaction-lev...Read more...

CEP discussion paper

Trade within multinational boundaries

Traditional theories of firm boundaries predict trade between vertically related units of the same firm. Using novel data that combine a comprehensive mapping of U.S. multinationals' production networks with their custom...Read more...

CEP discussion paper

Sustaining international rules in a multipolar world

We study the sustainability of international trading rules in a multipolar world. A rules-based equilibrium is shaped by three forces. A static temptation to exploit market power undermines cooperation, while two dynamic...Read more...

Journal article

Nature Human Behaviour:

Why single-item measures of wellbeing are best

We argue that individual wellbeing is best captured by single self-reports of one's overall quality of life. This approach is direct, efficient, globally comparable and distinguishes wellbeing from what might explain it....Read more...

Journal article

American Economic Journal: Economic Policy:

Sweeping up gangs: the effects of tough-on-crime policies from a network approach

Globally, gang proliferation is fought primarily through sweeps. This paper uses a difference-in-differences strategy to examine their causal impact on crime for arrested individuals and their peers. Analysis focuses on ...Read more...

CEP report

Road to recovery: Self-employed on the mend?

The eighth LSE-CEP survey of the self-employed shows weekly hours of the self-employed are now seeing some signs of recovery, compared with the last data collection in June 2023. The positive increase in work hours is tr...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

Journal of International Economics:

Liquidity as competitive advantage: the role of intangibles

We show that short-term liquidity can be a source of competitive advantage by enabling firms to invest in intangible assets. Our analysis leverages a French reform that capped payment delays in trade credit contracts, wh...Read more...

CEP discussion paper

Accommodating emerging giants in the global economy

How has aggregate income and welfare in the United States been affected by globalization and rapid productivity growth in emerging economies? We use the class of constant elasticity trade models to provide quantitative e...Read more...

Journal article

Journal of Political Economy: Macroeconomics:

Innovation and trade policy in a globalized world

What is the role of innovation policy in an open economy and how does it interact with foreign competition? We address this question employing a new innovation-driven growth model with two large open economies at differe...Read more...

CEP discussion paper

Equilibrium trade regimes: power- vs. rules-based

Members of the World Trade Organization are increasingly disregarding its rules, raising concerns about the future of the multilateral trading system. To analyze the sustainability of the rules-based trade regime, we dev...Read more...

CentrePiece article

Deglobalisation in disguise?

Brexit means that UK exporters of services now face more red tape and fewer opportunities....Read more...

CentrePiece article

How the US-China trade conflict boosted exports and employment in Mexico

Lower-paid workers in Mexican firms gained as exports shifted....Read more...

Journal article

The Energy Journal:

Natural gas vehicles: consequences for fuel markets and the environment

Policies to adopt cleaner fuels have become increasingly important, but their impacts on incumbent fuel prices and resulting greenhouse gas emissions remain unclear. We use a panel dataset on weekly prices at the gas sta...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...

Journal article

Canadian Journal of Economics:

Evaluating the impact of export finance support on firm-level export performance: evidence from Pakistan

This paper evaluates the impact of two large export finance support schemes on firm-level export performance. The Export Finance Scheme (EFS) and the Long-Term Finance Facility for Plant & Machinery (LTFF) provide loans ...Read more...

Journal article

Review of Economic Studies:

Temporal-difference estimation of dynamic discrete choice models

We study the use of Temporal-Difference learning for estimating the structural parameters in dynamic discrete choice models. Our algorithms are based on the conditional choice probability approach but use functional appr...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:

Networks in trade - evidence from the legacy of the Hanseatic league

We study trade networks following the decline of the Hanseatic League, using a novel trade data set that covers cities and captains in Northern Europe over 190 years. By the time of its dissolution in 1669, trade on form...Read more...

Journal article

Journal of International Economics:

Tickets to the global market: first US patent award and Chinese firm exports

We investigate how international patent activity enables firms from emerging economies to thrive in the global marketplace. We match Chinese customs data to US patent records, and leverage the quasi-random assignment of ...Read more...

Journal article

American Economic Review:

Monopsony and employer misoptimization explain why wages bunch at round numbers

We show that administrative hourly wage data exhibit considerable bunching at round numbers. We run two experiments randomizing wages around $0.10 and $1.00 to experimentally measure left-digit bias for identical tasks o...Read more...

Blog

Vox EU:

The impact of the 2025 US tariff announcements on UK firms

In the first half of 2025, the US and some of its trading partners announced significant changes to import tariffs. This column uses newly designed questions to study the impact of these changes on UK firms and to assess...Read more...

Blog

Vox EU:

An alliance for open trade: How to counter Trump's tariffs

The US administration's latest threat to impose sweeping new tariffs on many of its closest allies signals a renewed embrace of aggressive unilateralism and misunderstood economics. This column argues that the only effec...Read more...

Blog

UK in a Changing Europe:

Deglobalisation in disguise?

Shania Bhalotia, Swati Dhingra and Danyal Arnold explain their study on the effect of Brexit on the UK's ability to export services abroad. They argue that exporters now face higher trade costs, more red tape and fewer o...Read more...

Blog

Vox EU:

The battle for trade currency dominance: The dollar vs the renminbi in Argentina

The US dollar has traditionally dominated the invoicing of international trade. But could other currencies one day replace it? This column examines a unique policy experiment in Argentina in 2023. Amid a severe dollar sh...Read more...

CEP discussion paper

How to grow an invoicing currency: micro evidence from Argentina

How can a currency achieve more widespread international use? We study the internationalization of the Chinese renminbi (RMB) through the lens of a unique policy experiment in Argentina. In 2023, amid a severe dollar sho...Read more...

CEP discussion paper

Deglobalisation in disguise? Brexit barriers and trade in services

Deglobalisation policies promote the vision that pulling back from economic integration can help correct international imbalances and reposition national economies for renewed prosperity. A core vision of Brexit was to t...Read more...

CEP discussion paper

Trade diversion and labor market outcomes

In 2018 and 2019, the US administration increased tariffs on imports from China. Did these tariffs lead to more US imports from other countries such as Mexico? Using highly disaggregated data on the universe of Mexican f...Read more...

Blog

Vox EU:

Export strength does not equal tech strength: Rethinking EU comparative advantage

Amid geopolitical shocks, the EU is revisiting its industrial strategy. However, traditional metrics often paint a misleading picture of Europe's underlying strength. This column uses a new approach to measure the EU's r...Read more...

Blog

Vox EU:

How the 2018/19 US tariffs against China boosted exports and employment in Mexico

In 2018 and 2019, the US administration hiked tariffs on imports from China. This column shows that imports from Mexico partly filled the gap, leading to an export and employment surge in Mexico. Using highly disaggregat...Read more...

CentrePiece article

Return innovation: how migration shapes diffusion of new technologies

Novel products, processes and technologies are important drivers of economic growth. Davide Coluccia and Gaia Dossi show how migrants from Britain to the United States in the late 19th and early 20th century not only too...Read more...

Blog

Vox EU:

Hiroshima: Resilience of city structure after the atomic bombing

Cities have faced a host of shocks throughout history, including earthquakes, hurricanes, coastal flooding, and storm surges, as well as wartime destruction, such as in the current Russia-Ukraine conflict. This column lo...Read more...

Blog

LSE Inequalities:

Tariffs, automation and inequality: why US jobs won't return but developing countries will still lose

Headlines around Trump's sweeping tariffs have focused on trade wars, inflation and the geopolitical fallout. But a more profound shift is taking place, argues Viet Nguyen-Tien. Rather than restoring American jobs, these...Read more...

Blog

Vox EU:

The 2025 trade war: Dynamic impacts across US states and the global economy

In 2025, the US government announced a series of tariff increases targeting major trading partners, including Canada, China, and Mexico. This column estimates the economic consequences of these proposed tariffs to the US...Read more...

Government consultation

Treasury Committee: Bank of England Monetary Policy Reports

Swati Dhingra gave oral evidence to the Treasury committee....Read more...

Blog

Economics Observatory:

China Crisis

Headlines about China are dominated by the vagaries of trade war with the United States. Beyond those battles, there are big issues around consumer spending, the real estate market, the Belt and Road Initiative, and the ...Read more...

Blog

LSE Politics and Policy:

The UK deals with India, USA and the EU are symbolic

The Labour Government is on a trade deal spree. After signing a free trade agreement with India, the UK made a pact with the US to remove some of the tariffs on UK car and aerospace exports, and finally a new agreement w...Read more...

Blog

Financial Times:

How should central banks respond to US tariffs? (Podcast)

US tariffs have sent financial markets into a frenzy in recent weeks, but how much should central bankers be taking trade into account when setting monetary policy? To find out, Soumaya Keynes sits down with Bank of Engl...Read more...

CEP discussion paper

Willingness to pay for workplace amenities

We develop a revealed preference approach to measure the value of workplace amenities by analyzing how variation in non-wage job attributes affects excess mass in the earnings distribution at budget discontinuities. The ...Read more...

CEP discussion paper

The US-China trade war creates jobs (elsewhere)

We examine the indirect effects of the US-China trade war on Brazil's labor market. Using industry-specific tariff changes and the sectoral employment distribution across local labor markets, we construct a measure of re...Read more...

Journal article

The Quarterly Journal of Economics:

Putting quantitative models to the test: an application to the US-China trade war

The primary motivation behind quantitative work in international trade and many other fields is to shed light on the economic consequences of policy changes and other shocks. To help assess and potentially strengthen the...Read more...

Blog

LSE Business Review:

US-China tensions could become the biggest trade war in history

The announced US tariffs and the retaliatory actions taken by China have intensified. If the threats are carried out, they will drive the average implied US tariff to exceed 20 per cent, a level not seen since the 1930s....Read more...

CEP discussion paper

Firm-level technology adoption in times of crisis

We investigate the diffusion of frontier technologies across German firms before and during the Covid-19 crisis. Our analysis tracks the nature, timing, and pandemic-related motivations behind technology investments, usi...Read more...

Blog

LSE Politics and Policy:

Do Trump's tariffs signal the end of globalisation?

In this second instalment of his interview with Alexis Papazoglou, Thomas Sampson highlights the many uncertainties the future of global trade faces and argues that the biggest policy question for countries around the wo...Read more...

Blog

Imperial College Business School:

How protectionism risks undermining the US economy

Donald Trump's announcement of wide-ranging tariffs has threatened to upend the rules of global trade that have been in place for decades, impacting supply chains and businesses across the world. The US President's pla...Read more...

Blog

LSE Politics and Policy:

How will US tariffs affect the UK economy?

In this interview with Alexis Papazoglou, Thomas Sampson explains what the US tariffs mean for the UK economy and answers questions on the effects of Brexit on the UK's ability to negotiate the tariffs, as well as on wha...Read more...

Blog

Economics Observatory:

Liberation day

Last week's announcement of sweeping US tariffs will have a big impact on global trade. The method used to calculate the tax rates to be charged on imports from individual countries has surprised economists. For the UK, ...Read more...

CEP discussion paper

Teaching happiness (economics) in your dismal-science courses

This paper discusses ideas for incorporating the study of happiness and other measures of self-reported or subjective well-being (SWB) into undergraduate economics courses. We begin by motivating why students of economic...Read more...

Blog

Vox EU:

Deep integration and trade: UK firms in the wake of Brexit

How does dismantling deep integration affect international trade? This column uses firm-level customs data to study the impact of Brexit on UK goods trade. The authors find that in the short term, exit from the Single Ma...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...

CEP discussion paper

Trade with nominal rigidities: understanding the unemployment and welfare effects of the China shock

We present a dynamic quantitative trade and migration model that incorporates downward nominal wage rigidities and show how this framework can generate changes in unemployment and labor participation that match those unc...Read more...

Blog

LSE Business Review:

Advice to young women economists: learn to say no and protect your time

How are women making their mark in economics? To celebrate Women's History Month, Swati Dhingra shares her experiences, from India to British academia and the Bank of England. It took her a while to learn to say no and p...Read more...

Journal article

LSE Public Policy Review:

Explaining variation in child penalties: the role of gender norms and policies

This paper contributes to understanding global variation in child and marriage penalties by focusing on the role of patriarchal control, gender norms, and public policies. We introduce a new measure of gender norms, the ...Read more...

Journal article

Climate Policy:

Policing carbon markets

Carbon markets have emerged in recent decades as one of the most important tools for curbing industrial greenhouse gas emissions, but they present a number of novel enforcement challenges as compared to more conventional...Read more...

CEP discussion paper

Multinational networks and trade participation

We provide a novel explanation for the dominance of multinational corporations (MNCs) in international trade: MNC affiliates face lower trade frictions in countries that belong to their parental network. Combining rich a...Read more...

Journal article

Journal of Human Resources :

Where versus what: college value-added and returns to field of study in further education

We use administrative records on educational and labor market trajectories to estimate the value-added of English further education colleges in terms of educational and labor market outcomes and earnings returns to diffe...Read more...