Pinelopi Koujianou Goldberg with Greg Larson. The Unequal Effects of Globalization. Cambridge: The MIT Press, 2023.
For much of the past century, the United States has been a world leader in promoting free trade. During that period, most Americans probably took it for granted that the country benefited from having foreign markets for our products, while making foreign products available to American consumers. The idea that trading relationships should be a win-win for both parties was a pillar of economic theory. It was deeply rooted in the basic insight of free market economics, that economic actors prosper by dividing their labor between different forms of production and engaging in free exchange. If individuals and firms do so, why not countries? Let each country export the things it can produce most efficiently while importing the things it does not.
In recent decades, however, the increase in global trade has raised concerns about unequal economic effects. Globalization creates winners, to be sure, but maybe it also creates too many losers, notably manufacturing workers who lose their jobs to lower-wage foreign laborers. Donald Trump has gone so far as to assert that the United States as a country is losing from free trade, and we should return to an era of tariff barriers to protect our industries.
This short but timely book is based on a lecture that principal author Pinelopi Goldberg gave at the Stockholm School of Economics in 2019. At the time, she was chief economist of the World Bank Group.
Trends in globalization
Goldberg begins by identifying two main features of the “age of globalization.” The first is the historic decline in protective tariffs after World War II. The second is technological developments that lowered the costs of transportation and communication. As a result, “world exports, fairly constant in the nineteenth and early twentieth centuries, began rising after World War II and accelerated dramatically in the late 1990s and early 2000s—a period now known as hyperglobalization that coincided with the emergence of global value chains (GVCs).” In global value chains, many different countries play some part in designing, producing and/or marketing a finished product.
Since the United States has its own very large consumer market, it relies less on exports than many smaller economies do. The export share of its economy increased only from 4 percent to 9 percent between 1945 and 2014. But in recent years, the U.S. has imported more than it exports.
Economists have disagreed over how much of globalization to attribute to technological change, as opposed to policy changes. Recently, more have emphasized technological change, but Goldberg makes a case for policy effects, for several reasons. Tariffs are still falling in many developing countries, and the impact of that change is amplified by the increasing complexity of global value chains. Policy changes affect trade in other ways besides tariffs too, such as by setting standards that assure consumers that products produced in other countries are safe to use.
Global trade has slowed somewhat since the Global Financial Crisis of 2008. Goldberg says that it is too early to say if this will turn out to be a long-term trend. Even if trade should decline between distant countries with troubled relationships, such as the U.S. and China, trade within world regions like Europe or the Americas might still thrive. “GVCs may partially or entirely relocate their operations to different parts of the world…, and regionalism may become the new form of globalization.”
Many countries have experienced a growing backlash against international trade agreements. Backlash in the United States led the Trump administration to put tariffs on selected goods, especially steel and aluminum, electronic devices, and certain Chinese consumer products like vacuum cleaners. He promises additional tariffs if reelected.
Goldberg reports a drop from 80 percent to “slightly more than 65 percent” from 2002 to 2014 in the share of Americans who believed that trade was good for the economy. Increasing disenchantment with trade is one factor contributing to Trump’s MAGA movement. One research study reported that less educated whites were especially likely to leave the Democratic Party if they lived in counties affected by increased Mexican competition after NAFTA.
Some of the new resistance to trade arises from perceptions that our trading partners do not always play fair.
There are…many complaints that market access in some developing countries is limited, that many developing country governments give subsidies and other unfair advantages to local firms and state-owned enterprises, and that some countries, especially China, engage in forced technology transfer or the outright theft of intellectual property.
Of course, even fair trade could create winners and losers. Economists and policymakers want to know if international trade worsens economic inequality.
Trade and global inequality
The impact of global trade on inequality is not simple. Goldberg stresses the importance of distinguishing inequality across countries and inequality within countries.
Taking inequality across countries first, the book makes this claim: “There is substantial evidence and widespread consensus among economists and economic historians that global inequality has decreased dramatically in recent decades, especially in the decades since World War II.” The main evidence for a decline in global inequality is a reduction in the portion of the world’s population living in extreme poverty. The income distribution for the world population shows declining frequencies at the lowest end. In that respect, at least some very poor countries are looking a bit more like richer countries, a phenomenon economists call convergence.
Based on other sources, however, such as Krugman and Wells’s Macroeconomics and Branko Milanovic’s Global Inequality, I believe that a generalization linking globalization and declining inequality needs to be carefully qualified. A decline in absolute poverty may not reduce inequality if the rich people of the world are also getting richer, as they have been. Only if poorer countries have higher rates of economic growth than richer countries can inequality across countries go down. In some developing countries, notably China and other countries in Eastern Asia, global trade has facilitated rapid enough growth to narrow the income gap with more developed countries. In other parts of Asia, as well as in Latin America and Africa, that is generally not the case.
Another way of looking at global inequality is to examine where along the global income distribution the greatest income growth is occurring. Based on data from 1980 to 2016 analyzed by Piketty, Saez and Zucman, the largest income growth has been experienced by the world’s richest 1%, the next largest by the poorest 40%, and the least growth by the middle-income group in between. That middle group consists mainly of the middle classes in the more advanced economies. That raises the question of whether the benefits of global trade experienced by the world’s rich and poor have occurred at the expense of those in the global middle.
Trade and within-country inequality
Has global trade increased inequality within countries, especially our own? Here too, the answer is not simple. The effects on workers and consumers are somewhat different, and most adults are both.
In general, workers in more developed economies have greater skills and higher wages, as well as lower birth rates, while developing countries have an abundance of low-skilled labor. Traditionally, economists have reasoned that when developing countries export the products of their labor, their own workers should benefit, but the least skilled workers within more developed countries should be hurt by the competition. In the 1990s, economists attributed the growing wage gap between skilled and unskilled workers more to the demands of new technologies. But they turned their attention to the role of trade in the deteriorating situation of many American workers after Chinese imports began to surge. In 2000, the U.S. enacted the United States-China Relations Act, which granted China permanent normal trade relations status; China joined the World Trade Organization the following year. Goldberg says that “even if one does not fully accept the claim that the China shock was the main driver behind the decline of US manufacturing employment, it is clear that it changed the relative positions of workers employed in certain industries and/or living in certain regions.”
In theory, workers in regions where jobs are lost to foreign competition can move to areas where more successful industries are creating jobs. But such mobility is in fact limited, since pulling up stakes and starting a new career in midlife is not easy.
On the other hand, economic theory predicts that many people stand to gain from foreign imports as consumers. They can get access to finished goods produced at lower cost abroad. They may also get lower prices on goods produced domestically, if producers pay less for imported inputs like raw materials, and if producers pass those cost savings on to consumers. (A good argument against tariffs is that they tend to negate these consumer benefits by taxing imports.)
Whether producers do in fact pass cost savings on to consumers may depend on how much competition they face in their industries. Dominant firms may have the market power to increase profit margins rather than share those benefits with consumers or workers. “Firms participating in GVCs typically pass a smaller share of the realized cost savings on to their consumers (in the form of lower prices) as well as a smaller share of their higher profit margins on to workers (in the form of higher wages).”
Considering the effects of trade on workers and consumers together, price benefits for consumers are likely to be spread rather evenly over the population, while wage losses are more likely to hit low-skilled workers in certain regions. That leads to the conclusion that the net effect of trade has been to increase inequality within developed countries, both by increasing the profits of wealthy shareholders and reducing employment prospects and wages in some segments of the working class.
Complementary effects of technology and trade
Having recently reviewed Mordicai Kurz’s Technology and Market Power, I am struck by similarities between his analysis of technology and this book’s analysis of trade. Kurz argues that the emergence of new technologies creates opportunities for innovative firms to monopolize technical knowledge and use the resulting market power to raise profit margins. Government can either constrain that process with egalitarian public policies, as it did for much of the twentieth century, or else facilitate it with more passive policies, as it has done since the 1980s.
New technologies and globalization have gone hand in hand in recent decades, making it hard for economists to distinguish their effects. Both have created opportunities for dominant firms to achieve market power and higher profit margins, enhancing the benefits for shareholders while limiting the benefits for consumers and workers.
Both new technologies and global trade have impacted negatively on low-skilled workers, but in somewhat different ways. New technologies raise the skill requirements of many jobs, leaving less skilled workers at a disadvantage. Global trade puts less skilled workers in competition with workers from developing countries.
Both new technologies and global trade challenge policymakers to mitigate the detrimental effects of rising inequality. Goldberg’s policy proposals are much less detailed than Kurz’s, but she does advocate regionally targeted measures to give more help to displaced workers. She also shares Kurz’s concerns about market power:
[T]he dramatic growth of firms profits in light of globalization demands greater focus and policy action… First and foremost, addressing the recent increase in firm markups demands greater attention to how these large global firms are taxed and regulated.
Both these books represent some shift in economists’ views of these twin forces of economic change, technology and trade. More economists seem to be turning away from passive acceptance of market outcomes and toward more active interest in mitigating their least desirable effects.
Posted by Ed Steffes 