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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Boris Johnson is right about Saudi Arabia - but will he stick to his tune in Riyadh?

The Foreign Secretary went off script, but on truth. 

The difference a day makes. On Wednesday Theresa May was happily rubbing shoulders with Saudi Royalty at the Gulf Co-operation Council summit and talking about how important she thinks the relationship is.

Then on Thursday, the Guardian rained on her parade by publishing a transcript of her Foreign Secretary, Boris Johnson, describing the regime as a "puppeteer" for "proxy wars" while speaking at an international conference last week.

We will likely never know how she reacted when she first heard the news, but she’s unlikely to have been happy. It was definitely off-script for a UK foreign secretary. Until Johnson’s accidental outburst, the UK-Saudi relationship had been one characterised by mutual backslapping, glamorous photo-ops, major arms contracts and an unlimited well of political support.

Needless to say, the Prime Minister put him in his place as soon as possible. Within a few hours it was made clear that his words “are not the government’s views on Saudi and its role in the region". In an unequivocal statement, Downing Street stressed that Saudi is “a vital partner for the UK” and reaffirmed its support for the Saudi-led air strikes taking place in Yemen.

For over 18 months now, UK fighter jets and UK bombs have been central to the Saudi-led destruction of the poorest country in the region. Schools, hospitals and homes have been destroyed in a bombing campaign that has created a humanitarian catastrophe.

Despite the mounting death toll, the arms exports have continued unabated. Whitehall has licensed over £3.3bn worth of weapons since the intervention began last March. As I write this, the UK government is actively working with BAE Systems to secure the sale of a new generation of the same fighter jets that are being used in the bombing.

There’s nothing new about UK leaders getting close to Saudi Arabia. For decades now, governments of all political colours have worked hand-in-glove with the arms companies and Saudi authorities. Our leaders have continued to bend over backwards to support them, while turning a blind eye to the terrible human rights abuses being carried out every single day.

Over recent years we have seen Tony Blair intervening to stop an investigation into arms exports to Saudi and David Cameron flying out to Riyadh to meet with royalty. Last year saw the shocking but ultimately unsurprising revelation that UK civil servants had lobbied for Saudi Arabia to sit on the UN Human Rights Council, a move which would seem comically ironic if the consequences weren’t so serious.

The impact of the relationship hasn’t just been to boost and legitimise the Saudi dictatorship - it has also debased UK policy in the region. The end result is a hypocritical situation in which the government is rightly calling on Russian forces to stop bombing civilian areas in Aleppo, while at the same time arming and supporting Saudi Arabia while it unleashes devastation on Yemen.

It would be nice to think that Johnson’s unwitting intervention could be the start of a new stage in UK-Saudi relations; one in which the UK stops supporting dictatorships and calls them out on their appalling human rights records. Unfortunately it’s highly unlikely. Last Sunday, mere days after his now notorious speech, Johnson appeared on the Andrew Marr show and, as usual, stressed his support for his Saudi allies.

The question for Johnson is which of these seemingly diametrically opposed views does he really hold? Does he believe Saudi Arabia is a puppeteer that fights proxy wars and distorts Islam, or does he see it as one of the UK’s closest allies?

By coincidence Johnson is due to visit Riyadh this weekend. Will he be the first Foreign Secretary in decades to hold the Saudi regime accountable for its abuses, or will he cozy up to his hosts and say it was all one big misunderstanding?

If he is serious about peace and about the UK holding a positive influence on the world stage then he must stand by his words and use his power to stop the arms sales and hold the UK’s "puppeteer" ally to the same standard as other aggressors. Unfortunately, if history is anything to go by, then we shouldn’t hold our breath.

Andrew Smith is a spokesman for Campaign Against Arms Trade (CAAT). You can follow CAAT at @CAATuk.