Economists are often criticised for making inaccurate forecasts and for making false assumptions. Their analysis is frequently dismissed by politicians when it contradicts their own views.
But is this fair? Have economists responded to the realities of the global economy and to the behaviour of people, firms, institutions and government as they respond to economic circumstances? The answer is a qualified yes.
Behavioural economics is increasingly challenging the simple assumption that people are ‘rational’, in the sense that they maximise their self interest by weighing up the marginal costs and benefits of alternatives open to them. And macroeconomic models are evolving to take account of a range of drivers of global growth and the business cycle.
The linked article and podcast below look at the views of 2019 Nobel Prize-winning economist Esther Duflo. She has challenged some of the traditional assumptions of economics about the nature of rationality and what motivates people. But her work is still very much in the tradition of economists. She examines evidence and sees how people respond to incentives and then derives policy implications from the analysis.
Take the case of the mobility of labour. She examines why people who lose their jobs may not always move to a new one if it’s in a different town. Partly this is for financial reasons – moving is costly and housing may be more expensive where the new job is located. Partly, however, it is for reasons of identity. Many people are attached to where they currently live. They may be reluctant to leave family and friends and familiar surroundings and hope that a new job will turn up – even if it means a cut in wages. This is not irrational; it just means that people are driven by more than simply wages.
Duflo is doing what economists typically do – examining behaviour in the light of evidence. In her case, she is revisiting the concept of rationality to take account of evidence on what motivates people and the way they behave.
In the light of workers’ motivation, she considers the implications for the gains from trade. Is free trade policy necessarily desirable if people lose their jobs because of cheap imports from China and other developing countries where labour costs are low?
The answer is not a clear yes or no, as import-competing industries are only part of the story. If protectionist policies are pursued, other countries may retaliate with protectionist policies themselves. In such cases, people working in the export sector may lose their jobs.
She also looks at how people may respond to a rise or cut in tax rates. Again the answer is not clear cut and an examination of empirical evidence is necessary to devise appropriate policy. Not only is there an income and substitution effect from tax changes, but people are motivated to work by factors other than take-home pay. Likewise, firms are encouraged to invest by factors other than the simple post-tax profitability of investment.
Podcast
Article
Questions
- In traditional ‘neoclassical’ economics, what is meant by ‘rationality’ in terms of (a) consumer behaviour; (b) producer behaviour?
- How might the concept of rationality be expanded to take into account a whole range of factors other than the direct costs and benefits of a decision?
- What is meant by bounded rationality?
- What would be the effect on workers’ willingness to work more or fewer hours as a result of a cut in the marginal income tax rate if (a) the income effect was greater than the substitution effect; (b) the substitution effect was greater than the income effect? Would your answers to (a) and (b) be the opposite in the case of a rise in the marginal income tax rate?
- Give some arguments that you consider to be legitimate for imposing controls on imports in (a) the short run; (b) the long run. How might you counter these arguments from a free-trade perspective?
Donald Trump has threatened to pull out of the World Trade Organization. ‘If they don’t shape up, I would withdraw from the WTO,’ he said. He argues that the USA is being treated very badly by the WTO and that the organisation needs to ‘change its ways’.
Historically, the USA has done relatively well compared with other countries in trade disputes brought to the WTO. However, President Trump does not like being bound by an international organisation which prohibits the unilateral imposition of tariffs that are not in direct retaliation against a trade violation by other countries. Such tariffs have been imposed by the Trump administration on steel and aluminium imports. This has led to retaliatory tariffs on US imports by the EU, China and Canada – something that is permitted under WTO rules.
Whether or not the USA does withdraw from the WTO, Trump’s threats bring into question the power of the WTO and other countries’ compliance with WTO rules. With the rise in protectionist sentiments around the world, the power of the WTO would seem to be on the wane.
Even if the USA does not withdraw from the WTO, it is succeeding in weakening the organisation. Appeals cases have to be heard by an ‘appellate body’, consisting of at least three judges drawn from a list of seven, each elected for four years. But the USA has the power to block new appointees – and has done so. As Larry Elliott states in the first article below:
The list of judges is already down to four and will be down to the minimum of three when the Mauritian member, Shree Baboo Chekitan Servansing, retires at the end of September. Two more members will go by the end of next year, at which point the appeals process will come to a halt.
This raises the question of the implication of a ‘no-deal’ Brexit – something that seems more likely as the UK struggles to reach a trade agreement with the EU. Leaving without a deal would mean ‘reverting to WTO rules’. But if these rules are being ignored by powerful countries such as the USA and possibly China, and if the appeals procedure has ground to a halt, this could leave the UK without the safety net of international trade rules. Outside the EU – the world’s most powerful trade bloc – the UK could find itself having to accept poor trade terms with the USA and other large countries.
Articles
Information
Questions
- Explain the WTO’s ‘Most-favoured-nation (MFN)’ clause. How would this affect trade deals between the UK and the EU?
- Would the trade deals that the EU has negotiated with other countries, such as Japan, be available to the UK after leaving the EU?
- Demonstrate how, according to the law of comparative advantage, all countries can gain from trade.
- In what ways is the USA likely to gain and lose from the imposition of tariffs on steel and aluminium?
- How could a country that supports free trade ever support the imposition of tariffs?
- Why are tariffs not the most serious restriction on trade?
President-elect Donald Trump has blamed free trade for much of America’s economic problems. He argues that cheap imports from China, partly from an undervalued yuan, have led to a loss of jobs and to large-scale income flows from the USA to China. “They have taken our jobs; they have taken our money; and on top of that they have loaned the money to us and we actually pay them interest now on money,” he claimed to The Economist.
And it’s not just trade with China that he criticises. He sees cheap imports from developing countries generally as undermining US jobs. The solution he advocates is the imposition of tariffs on imports that threaten US jobs and scrapping, or fundamentally renegotiating, trade deals.
He refers to NAFTA – the North American Free Trade Agreement with Canada and Mexico – as the worst trade deal in US history and blames it for the loss of thousands of US manufacturing jobs. He has said that he will demand better terms from Mexico and Canada. If they don’t agree to them, he’d pull the USA out of NAFTA altogether.
A more recent trade agreement is the Trans-Pacific Partnership (TPP) with 11 other Pacific rim countries (but not including China). The agreement was signed on 4 February 2016, but is awaiting ratification from member countries. Amongst other things, the agreement cuts over 18,000 tariffs. Donald Trump has said that he would block the deal, even though it would lead to the elimination of tariffs on most US manufactured and agricultural products exported to the other countries. He argues that it would lead to a large-scale loss of US jobs from cheap imports.
Another major trade deal criticised by Trump is that being negotiated between the USA and the EU – the Transatlantic Trade and Investment Partnership (TTIP). It has already faced fierce opposition in Europe, with many fearing that it would give too much power to US corporations in their operations in Europe. With the opposition from Trump, it looks unlikely that the agreement will be signed, even in an amended form.
So is this more protectionist stance by Donald Trump in America’s interests? The main argument against restricting imports is that people generally in the USA would be poorer. This is the prediction from the law of comparative advantage. Trade allows a country to consume beyond its production possibility curve by specialising in the production of goods with relatively low opportunity costs and importing goods which would have had a higher opportunity cost if they were produced domestically (see, for example, Economics, 9th edition, pages 711–4). By imposing tariffs or other restrictions on cheap imports, consumers would end up paying more for such goods if they now have to be produced domestically. Cheap Chinese t-shirts would be replaced by expensive US ones. Real US incomes would be lower.
Another danger of pursuing protectionist policies is that other countries might retaliate. Trade wars might result, with the world ending up poorer.
Then there is a problem of locating products. It is not a simple question of saying a product is made in the USA or elsewhere. With complex modern supply chains, many products use components and services, such as design and logistics, from many different countries. Imposing restrictions on imports may lead to damage to products which are seen as US products.
An open trade policy, by contrast, not only leads to higher consumption, it stimulates economic growth and the extra competition it creates improves domestic productivity. As the pro-free trade article by Graeme Leach, linked below, argues:
There is overwhelming evidence that free trade improves economic performance by increasing competition in the domestic market. Trade disciplines domestic firms with market power, and simultaneously promotes productivity growth. Research also shows that a 10 per cent increase in trade leads to a 5 per cent increase in per capita income. More open trade policies are associated with higher per capita incomes.
And as the article by Clark Packard argues:
There is no question that America’s middle and lower classes have benefited from our trade liberalization. Through the widely accepted principle of comparative advantage in our trade policies, productivity has surged and prices have declined. Lower prices save the average American family thousands of dollars a year on goods they consume, raising the standard of living through enhanced purchasing power.
Despite these arguments, there is one crucial problem with free trade. Although overall levels of consumption may be higher, trade may make some people poorer. If workers in the US steel or garment industries lose their jobs because of cheap imports, they will certainly feel worse off, especially if there is no prospect of them getting another job elsewhere. They may lack transferable skills or have too many family or personal ties to move elsewhere in the country.
The government could help to ameliorate the problems of those made unemployed by providing retraining or resettlement grants or by investing in infrastructure projects that require relatively low skilled, but local, construction workers. But, as the Forbes article states:
It is in helping displaced workers of all types that US government, as well as the leaders of other rich countries, have largely failed. Little has been done to assist laid-off workers whose industries simply cannot compete in developed countries anymore.
What is more, inequality has been growing in the USA, and in most other developed countries too. 
International trade and investment and the growing concentration of power in large corporations has meant that most of the gains from trade have gone to the richest people. Many of the poor blame trade for their plight and the argument that they have still made some gains is either not believed or is not enough to appease them.
An interesting insight into why people may have voted for Trump and his policy of protectionism is provided by the Ultimatum Game (see also). As the final article below explains:
The game itself involves two players. The first player receives a sum of money, and gets to propose how to divide it between the two players. The second player can do only one thing: accept or reject the proposal. If the second player accepts, then the money is divided between the two players as proposed. But if the second player rejects the proposal, then neither player gets anything.
It might seem that the rational thing for the second person to do is to accept whatever the first person proposes, however little it gives to the second person providing it is something – after all, even a little is better than nothing. But experiments show that people playing the second person do not behave in that way. They seek a fair distribution. If the proposed distribution is perceived as unfair, they would prefer to reject the proposal, with both players getting nothing.
This may help to explain the psychology of poor blue-collar workers. They would rather punish the rich a lot, and possibly themselves a little, than let the rich continue getting richer while they are stuck on low wages with little prospect for improvement. But, of course, they may also believe Trump’s rhetoric that they will indeed be better off from protectionist policies that help save their jobs.
What precisely Donald Trump will do about trade agreements and protection, we will have to wait and see. Often what is pledged in an election campaign is not carried out in office or is substantially watered down.
Articles
How Donald Trump thinks about trade The Economist (9/11/16)
What President Trump’s victory means for the most important trade deal in the world Independent, James Moore (9/11/16)
Trump and trade: A radical agenda? BBC News, Ben Morris (9/11/16)
Trump could change trade stance, says former Bush adviser BBC News, Tom Espiner (11/11/16)
3 Ways President-Elect Trump May Shake Up Trade Policy NPR, Marilyn Geewax (9/11/16)
Donald Trump Win to Upend Trade Policy Nasdaq, William Mauldin and John Lyons (9/11/16)
Stiglitz Grades Donald Trump an F on Economics Bloomberg, Enda Curran and Angie Lau (19/9/16)
Trump can kill trade deals but he can’t kill globalisation The Conversation, Remy Davison (10/11/16)
Anti-free trader Donald Trump is on a collision course with economic reality City A.M., Graeme Leach (9/11/16)
What Trump And Clinton Both Get Wrong On Trade Forbes, Simon Constable (4/11/16)
The Rabble Understands Trade Pretty Well Huffington Post, Brad Miller (4/11/16)
Contrary to Donald Trump’s claims, free trade benefits the poorest Americans U.S.News, Clark Packard (27/10/16)
The Meaning of Open Trade and Open Borders The New Yorker, Bernard Avishai (17/10/16)
We just saw what voters do when they feel screwed. Here’s the economic theory of why they do it. Quartz, James Allworth (9/11/16)
Questions
- Use a simple two-product production possibility diagram to demonstrate the possible consumption gains to a country from trading with another country and specialising in exporting the good in which it has a comparative advantage.
- Search Donald Trump’s speeches to identify statements he has made about the trade policies he will pursue as president.
- Explain why some people may gain more from free trade than others. Why do the people who have gained the most tend to be the richest people?
- What are the arguments for and against the free movement of labour (a) within countries; (b) between countries?
- Compare the relative benefits and costs of tariffs and various forms of administrative constraints on trade.
- If the second player in the ultimatum game rejects an ‘unfair’ offer, should this behaviour be described as ‘irrational? Explain.
- Find out the details of the Trans-Pacific Partnership agreement. In what ways, other than through increased trade, would the agreement benefit the residents of the member countries?
- Does free trade threaten employment in the long term? Explain.
With countries around the globe struggling to recover from recession, many seem to believe that the answer lies in a growth in exports. But how can this be achieved? A simple solution is to lower the exchange rate.
Under a pegged exchange rate, the currency could be devalued. Alternatively, if the country’s inflation is lower than that of other countries, merely leaving the exchange rate pegged at its current level will bring about a real devaluation (in purchasing-power parity terms).
Under a floating exchange rate, one answer would be to lower interest rates. This would involve open market operations to support the lower rate and that would increase the money supply. But with central banks’ interest rates at virtually zero, it is not possible to lower them further. In such circumstances a solution would be a deliberate policy of increasing the money supply through “quantitative easing”. For example, the USA is considering a second round of quantitative easing (known as “QE2”). This would tend to push down the exchange rate of the dollar.
But stimulating exports through devaluation or depreciation is a zero-sum game globally. If currency A depreciates against currency B, currency B necessarily appreciates against currency A. Country A’s gain in exports to Country B are an increase in imports for Country B. It is logically impossible for every currency in the world to depreciate! Yet depreciation is exactly the policy being pursued by countries such as Japan, South Korea and Taiwan, all of which have directly intervened in the currency markets to lower their exchange rates. And, in each case of course, other countries’ currencies have an equivalent appreciation against them.
Economists and politicians in the USA argue that the dollar is fundamentally over valued against the Chinese yuan (or ‘renminbi’ as it is sometimes called). They are calling on China to revalue by far more than the 2% increase since June 2010. But what if China refuses to do so? On 29 September the House of Representatives passed a bill giving the executive branch the authority to impose a wide range of tariffs on imports from China. The bill was passed with a huge majority of 348 to 79.
So is this the start of a trade war? Many in the USA argue that China is already waging such a war by giving subsidies to a wide range of exports. And that war is hotting up. China has just announced that it is imposing traiffs ranging from 50% to 104% on various poultry imports from the USA. And if it is a trade war, will there be any winners? The following articles investigate.
Global recovery’s weakness raises possibility of trade war Guardian, Larry Elliott (4/10/10)
Tension mounts as China and US trade insults over currency Independent, Stephen Foley (1/10/10)
Is the world in a trade war? Time Magazine blogs: The Curious Capitalist, Michael Schuman (29/9/10)
Trade War Is Here – and We’ve Disarmed The Huffington Post, Robert Kuttner (3/10/10)
US House Passes Anti-China Trade War Bill GlobalResearch.ca, Barry Grey (1/10/10)
Currencies the key to market’s next move BBC News, Jamie Robertson (3/10/10)
A Message for China New York Times (30/9/10)
Taking On China New York Times, Paul Krugman (30/9/10)
Krugman Makes Two Powerful Arguments Against “Taking on China” Wall Street Pit, Scott Sumner (2/10/10)
Why the U.S. can’t win a trade war with China The Globe and Mail (Canada), Carl Mortished (4/10/10)
China-Japan trade war looms CTV News (Canada), Mark MacKinnon (23/9/10)
IMF chief’s warning of currency war ‘real threat’ BBC News, interview with Dominique Strauss-Khan, head of the IMF (7/10/10)
Could disputes over currency levels lead to a depression? BBC World Service, interview with Robert Zoellick (8/10/10)
China stands firm over yuan move BBC News, Andrew Walker (9/10/10)
What to do about China’s currency? Washington Post (10/10/10)
How to stop a currency war The Economist (14/10/10)
What’s the currency war about? BBC News, Laurence Knight (23/10/10)
Nominally cheap or really dear? The Economist (4/11/10)
Questions
- Why are competitive devaluations globally a zero sum game while global trade wars are a negative sum game?
- What are the arguments for and against using tariffs as a means of stimulating recovery?
- Why has quantitative easing so far had a more discernible effect on asset prices than on the real economy?
- Do a search on “Smoot-Hawley Tariff Act” of 1930 and describe its impact on the global economy in the 1930s. Are there any parallels today?
- How is it possible for massive trade surpluses and deficits to persist and yet for individual countries’ exchange rates and overall balance of payments to be in equilibrium?
- Are global trade imbalances widening, and if so why?
- What would determine the size of the effect on the US balance of trade of an appreciation of the yuan?
