Consumption inequality is rising

In the last thirty years, consumption inequality has risen as fast as income inequality.

It has been a common belief that, while income inequality has risen rapidly in the west generally, and the United States specifically, inequality of consumption has travelled a much milder trajectory. Many reasons have been given for this effect, which was seen in a number of studies and generally assumed to be true.

Some argued that the divergence between the two was due to the unsustainable bubble of consumer credit; while the rich were getting richer faster than the poor were getting less poor, both ended up with mobile phones and flatscreen TVs, but the latter bought them with borrowed money. This, of course, leads those like Edwina Currie to argue that poor people aren't really poor because they have nice things.

Another interesting point raised off the back of the figures was the claim that it was entirely understandable, since the marginal utility of money declines pretty quickly. Thus, the explanation goes, income growth at the top end doesn't increase consumption all that much, since there isn't much to spend that money on. If this is true, then consumption inequality would indeed rise slower than income inequality in countries where absolute poverty is rare.

Now, though, it seems that both these arguments may come from faulty premises. A new paper from the American National Bureau of Economic Research argues that actually, consumption inequality has been rising at much the same rate as income inequality.

The authors write (£):

There is now mounting evidence that the [consumer expenditure survey, the source of many of the claims of divergence] is plagued by serious non-classical measurement error, which hinders the extent to which definitive conclusions can be made about the extent to which consumption inequality has evolved over the last three decades. . . 

Consumption inequality within the U.S. between 1980 and 2010 has increased by nearly the same amount as income inequality

And conclude:

Across every other measure of consumption we analyzed, consumption inequality increased substantially.

Of course, the same questions apply to consumption inequality as do to income inequality: why does it actually matter? So long as everyone can consume the essentials, does the difference between them and the rich have any effect?

The answer is one that Adam Smith hit upon over two centuries ago (although you are unlikely to find the libertarian Adam Smith Institute quoting it): what the rich can afford has a material effect on what is essential.

In The Wealth of Nations, published 1776, Smith wrote:

A linen shirt, for example, is, strictly speaking, not a necessary of life. The Greeks and Romans lived, I suppose, very comfortably, though they had no linen. But in the present times, through the greater part of Europe, a creditable day-labourer would be ashamed to appear in public without a linen shirt, the want of which would be supposed to denote that disgraceful degree of poverty, which, it is presumed, nobody can well fall into without extreme bad conduct.

Custom, in the same manner, has rendered leather shoes a necessary of life in England. The poorest creditable person, of either sex, would be ashamed to appear in public without them. In Scotland, custom has rendered them a necessary of life to the lowest order of men; but not to the same order of women, who may, without any discredit, walk about barefooted.

In France, they are necessaries neither to men nor to women; the lowest rank of both sexes appearing there publicly, without any discredit, sometimes in wooden shoes, and sometimes barefooted. Under necessaries, therefore, I comprehend, not only those things which nature, but those things which the established rules of decency have rendered necessary to the lowest rank of people.

Cartoonist Ruben Bolling sums the argument up in eight panels.

To Smith's list we can reasonably add mobile phones (required for much shift work), computers (essential for jobseeking) and, in much of the country, cars. Consumption inequality adds to this list from the top end even as the bottom end remains unable to afford it.

Hat tip to Matt Yglesias for the paper.

A Tajik migrant texts in Moscow. Mobiles are an essential tool worldwide (Getty)

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Leader: Trump and an age of disorder

Mr Trump’s disregard for domestic and international norms represents an unprecedented challenge to established institutions.

The US presidency has not always been held by men of distinction and honour, but Donald Trump is by some distance its least qualified occupant. The leader of the world’s sole superpower has no record of political or military service and is ignorant of foreign affairs. Throughout his campaign, he repeatedly showed himself to be a racist, a misogynist, a braggart and a narcissist.

The naive hope that Mr Trump’s victory would herald a great moderation was dispelled by his conduct during the transition. He compared his country’s intelligence services to those of Nazi Germany and repeatedly denied Russian interference in the election. He derided Nato as “obsolete” and predicted the demise of the European Union. He reaffirmed his commitment to dismantling Obamacare and to overturning Roe v Wade. He doled out jobs to white nationalists, protectionists and family members. He denounced US citizens for demonstrating against him. Asked whether he regretted any part of his vulgar campaign, he replied: “No, I won.”

Of all his predilections, Mr Trump’s affection for Vladimir Putin is perhaps the most troubling. When the 2012 Republican presidential nominee, Mitt Romney, warned that Russia was the “number one geopolitical foe” of the US, he was mocked by Barack Obama. Yet his remark proved prescient. Rather than regarding Mr Putin as a foe, however, Mr Trump fetes him as a friend. The Russian president aims to use the US president’s goodwill to secure the removal of American sanctions, recognition of Russia’s annexation of Crimea and respect for the murderous reign of the Syrian president, Bashar al-Assad. He has a worryingly high chance of success.

Whether or not Mr Trump has personal motives for his fealty (as a lurid security dossier alleges), he and Mr Putin share a political outlook. Both men desire a world in which “strongmen” are free to abuse their citizens’ human rights without fear of external rebuke. Mr Trump’s refusal to commit to Nato’s principle of collective defence provides Mr Putin with every incentive to pursue his expansionist desires. The historic achievement of peace and stability in eastern Europe is in danger.

As he seeks reconciliation with Russia, Mr Trump is simultaneously pursuing conflict with China. He broke with precedent by speaking on the telephone with the Taiwanese president, Tsai Ing-wen, and used Twitter to berate the Chinese government. Rex Tillerson, Mr Trump’s secretary of state nominee, has threatened an American blockade of the South China Sea islands.

Mr Trump’s disregard for domestic and international norms represents an unprecedented challenge to established institutions. The US constitution, with its separation of powers, was designed to restrain autocrats such as the new president. Yet, in addition to the White House, the Republicans also control Congress and two-thirds of governorships and state houses. Mr Trump’s first Supreme Court appointment will ensure a conservative judicial majority. The decline of established print titles and the growth of “fake news” weaken another source of accountability.

In these circumstances, there is a heightened responsibility on the US’s allies to challenge, rather than to indulge, Mr Trump. Angela Merkel’s warning that co-operation was conditional on his respect for liberal and democratic values was a model of the former. Michael Gove’s obsequious interview with Mr Trump was a dismal example of the latter.

Theresa May has rightly rebuked the president for his treatment of women and has toughened Britain’s stance against Russian revanchism. Yet, although the UK must maintain working relations with the US, she should not allow the prospect of a future trade deal to skew her attitude towards Mr Trump. Any agreement is years away and the president’s protectionist proclivities could yet thwart British hopes of a beneficial outcome.

The diplomatic and political conventions embodied by the “special relationship” have endured for more than seven decades. However, Mr Trump’s election may necessitate their demise. It was the belief that the UK must stand “shoulder to shoulder” with the US that led Tony Blair into the ruinous Iraq War. In this new age of disorder, Western leaders must avoid being willing accomplices to Mr Trump’s agenda. Intense scepticism, rather than sycophancy, should define their response.

This article first appeared in the 19 January 2016 issue of the New Statesman, The Trump era