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Confronted with a novel, aggressive coronavirus, Germany implemented measures to reduce its spread since March 2020. Requiring people to wear face masks in public places has, however, been a subject of controversy and isolating the effect of mask-wearing on the spread of COVID-19 is not simple. This column looks at the town of Jena and other German regions that introduced face masks before the rest of the country to see whether the requirement makes a difference in the number of new COVID-19 cases. Requiring face masks to be worn decreases the growth rate of COVID-19 cases by about 40% in Germany.

Originally posted 17 November 2007, this Vox column is more relevant than ever arguing that adopting the euro is effectively irreversible. Leaving would require lengthy preparations, which, given the anticipated devaluation, would trigger the mother of all financial crises. National households and firms would shift deposits to other Eurozone banks producing a system-wide bank run. Investors, trying to escape, would create a bond-market crisis. Here is what the train wreck would look like.

The immense economic inequality we observe in the world today is the path-dependent outcome of a multitude of historical processes, one of the most important of which has been European colonialism. This column, taken from a recent Vox eBook, discusses how colonialism has shaped modern inequality in several fundamental, but heterogeneous, ways.

Official statistics for US high school graduation rates mask a growing educational divide. This column presents research showing that a record number of Americans are going to university – while an increasing number are dropping out of high school. This poses major social challenges for the United States.

The 'Scramble for Africa' – the artificial drawing of African political boundaries among European powers in the end of the 19th century – led to the partitioning of several ethnicities across newly created African states. This columns shows that partitioned ethnic groups have suffered significantly longer and more devastating civil wars. It also uncovers substantial spillovers as ethnic conflict spreads from the historical homeland of groups partitioned to nearby areas where non-split ethnicities reside.

The Covid-19 pandemic is unprecedented in its global reach and impact, posing formidable challenges to policymakers and to the empirical analysis of its direct and indirect effects within the interconnected global economy. This column uses a ‘threshold-augmented multi-country econometric model’ to help quantify the impact of the Covid-19 shock along several dimensions. The results of the analysis show that the global recession will be long lasting, with no country escaping its impact regardless of their mitigation strategy. These findings call for a coordinated multi-country policy response to the pandemic.

Slavery, according to historical accounts, played an important role in Africa’s underdevelopment. It fostered ethnic fractionalisation and undermined effective states. The largest numbers of slaves were taken from areas that were the most underdeveloped politically at the end of the 19th century and are the most ethnically fragmented today. Recent research suggests that without the slave trades, 72% of Africa’s income gap with the rest of the world would not exist today.

Societies characterised by a high transmission of socioeconomic status across generations are not only more likely to be perceived as ‘unfair’, they may also be less efficient as they waste the skills of those coming from disadvantaged backgrounds. Existing evidence suggests that the related earnings advantages disappear after several generations. This column challenges this view by comparing tax records for family dynasties (identified by surname) in Florence, Italy in 1427 and 2011. The top earners among the current taxpayers were found to have already been at the top of the socioeconomic ladder six centuries ago. This persistence is identified despite the huge political, demographic, and economic upheavals that occurred between the two dates. 

The CEPR Press eBook on secular stagnation has been viewed over 80,000 times since it was published on 15 August 2014. The PDF remains freely downloadable, but as the European debate on secular stagnation is moving into policy circles, we decided to also make it a Kindle book. This is available from Amazon; all proceeds will help defray VoxEU expenses.

The top 1% of US earners now command a far higher share of the country's income than they did 40 years ago. This column looks at 18 OECD countries and disputes the claim that low taxes on the rich raise productivity and economic growth. It says the optimal top tax rate could be over 80% and no one but the mega rich would lose out.

More than one billion adults across the globe are overweight, and at least 300 million are clinically obese. This column argues that the obesity epidemic in the US has been creeping up throughout the twentieth century, much earlier than the official account acknowledges. Current US standards thereby mislead many overweight and obese youth into believing that their weight is normal when it is not.

The effects of of globalisation on income distributions in rich countries have been studied extensively. This column takes a different approach by looking at developments in global incomes from 1988 to 2008. Large real income gains have been made by people around the median of the global income distribution and by those in the global top 1%.  However, there has been an absence of real income growth for people around the 80-85th percentiles of the global distribution, a group consisting of people in ‘old rich’ OECD countries who are in the lower halves of their countries’ income distributions.

It’s no longer safe to assert that trade’s impact on the income distribution in wealthy countries is fairly minor. There’s a good case that it is big, and getting bigger. I’m not endorsing protectionism, but free-traders need better answers to the anxieties of globalisation’s losers.

The US has 4% of the world’s population but 21% of the global COVID-19-attributed infections and deaths. This column shows that when comparing excess mortality rates, a more robust way of reporting on pandemic deaths, Europe’s cumulative excess mortality rate from March to July is 28% lower than the US rate, contradicting the Trump administration’s claim that Europe’s rate is 33% higher. The US Northeast – the region most comparable with individual European countries – has experienced substantially worse excess mortality than Europe’s worst-affected countries. Had the US kept its excess mortality rate down to the level in Europe, around 57,800 American lives would have been saved. 

The idea of having GDP growth as the main target of economic policy has been under attack in recent years. This column addresses some of the criticisms and argues that continued GDP growth would be good for the UK and other European countries – and not just in the short term to reduce high levels of unemployment.

The adoption of new information technologies such as AI in more workplaces is influencing not just employment and wages, but worker well-being such as job satisfaction, stress, and health. Surveying approximately 10,000 workers in Japan, this column analyses the impact of new information technologies on the nature of tasks performed by workers, job satisfaction, and work-related stress. It finds that AI adoption contributes to both greater job satisfaction and increased stress, and considers approaches to maximise the positives of new technologies adoption while minimising its negative side effects.

At the start of the 1920s, Russia’s economy suffered the greatest economic catastrophe of a turbulent 20th century. This column argues that measuring this experience yields lessons for the relationship between state capacity, government policies, and economic development.

Prior to World War I, many authorities believed that countries with substantial agrarian sectors and grain exports, including the Russian Empire, could overcome war hardships more easily than those countries that imported grain. This column asks why the experts got it wrong in the case of Russia, and concludes that the economics and politics of the Russian grain and labour markets provide the answer. It was impossible simultaneously to mobilise 15 million males into the Russian army, procure the grain to feed them as soldiers, and avoid revolution. 

Although the negative impact of conspicuous consumption has been discussed for more than a century, the link between advertising and individual is not well understood. This column uses longitudinal data for 27 countries in Europe linking change in life satisfaction to variation in advertising spend. The results show a large negative correlation that cannot be attributed to the business cycle or individual characteristics.

Dealing with uncertainty about the state of the economy is one of the main challenges facing monetary policymakers. In recent years there has been an extensive debate on the value of some of the deep parameters driving the economy, such as the natural rate of interest and the slope of the Phillips curve, estimates of which are quite uncertain. This column argues that when facing uncertainty on the structural relationship among macroeconomic variables, central banks should adopt a pragmatic and data-dependent approach to adjusting their monetary policy stance. 

What do we know about the spread of protectionism during the Great Depression and what are the implications for today’s crisis? This column says the lesson is that countries should coordinate their fiscal and monetary measures. If some do and some don’t, the trade policy consequences could once again be most unfortunate.

The house and equity price busts on top of a credit crunch make this an unprecedented crisis for the modern US economy; its real economy effects are thus difficult to assess. This column provides insights based on evidence from 122 recessions in 21 advanced nations since 1960. Findings suggest recessions in such circumstances are much costlier and slightly longer. But the outcome can be affected by policy, and it’s high time that policymakers act swiftly and decisively.

China has been one of the world’s most dynamic economies in recent decades, but how did it fall so far behind? This column argues that the industrial revolution occurred in Europe rather than China because European entrepreneurs were eager to adopt machines to cut down on high labour costs. China didn’t “miss” the industrial revolution – it didn’t need it.