Over at Grasping Reality: Flaws in the Rietz-Barro Explanation of the Equity Premium

Over at Grasping Reality: Flaws in the Rietz-Barro Explanation of the Equity Premium: I have an itch I need to scratch, ever since I found Ken Rogoff writing:

Robert Barro… has shown that in canonical equilibrium macroeconomic models… small changes in the market perception of tail risks can lead both to significantly lower real risk-free interest rates and a higher equity premium…. Martin Weitzman, has espoused a different variant of the same idea based on how people form Bayesian assessments of the risk of extreme events…

Rogoff, Barro, and Weitzman are all sharper than I am by substantial margins. But this seems to me to be wrong. I don’t think that what their papers mean is that the equity return premium is driven by fears of the rare event of a complete macroeconomic catastrophe. And it definitely does not mean what the math of Barro (2005) says: that high equity prices in 1929 and 2000 were driven by a much higher than normal expectation of such a complete macroeconomic catastrophe. Barro and Weitzman both work in a model in which safe assets are in zero aggregate supply

Over at Grasping Reality: Trying to Make Sense of the Insane Policy of the Bank of France in the 1920s

Over at Grasping Reality: David Glasner: Today’s Economic History: Trying to Make Sense of the Insane Policy of the Bank of France in the 1920s: “I have occasionally referred to the insane Bank of France…

…or to the insane policy of the Bank of France, a mental disorder that helped cause the deflation that produced the Great Depression. The insane policy began in 1928 when the Bank of France began converting its rapidly growing stockpile of foreign-exchange reserves (i.e., dollar- or sterling-denominated financial instruments) into gold. The conversion of foreign exchange was precipitated by the enactment of a law restoring the legal convertibility of the franc into gold and requiring the Bank of France to hold gold reserves equal to at least 35% of its outstanding banknotes…

Must-Read: Tim Duy: More Mediocrity

Must-Read: Three percent of the prime-age population who really ought to be at work right now in a full-employment economy are not at work. Whatever your estimate of potential output growth is, the economy is surely not growing markedly faster than it. Inflation is below your target. And yet the Federal Reserve believes that it is time to tighten policy?

It is very hard to understand…

Graph Employment Population Ratio 25 54 years FRED St Louis Fed
Tim Duy: More Mediocrity: “Federal Reserve Chair Janet Yellen will be playing a game of mixed messages with Congress tomorrow…

…as she explains why she believes a rate hike approaches in spite of lackluster data. Today’s data didn’t help… core spending growth is decelerating on a year-over-year basis to 2013 rates…. I think [the Fed] are concluding 2014 was sufficient to largely close the output gap, as evidenced by falling unemployment and other measures of labor underutilization. San Francisco Federal Reserve President John Williams even believes that optimally, US growth needs to DECELERATE in 2016…. Hence, Boston Federal Reserve President Eric Rosengren can say things to Reuters like:

If we do continue to get improvement in labor markets, if we do become reasonably confident that we’re moving back to 2-percent inflation, it may be appropriate as early as September,’ he said of raising rates from near zero. ‘I don’t think we have seen that evidence yet but we still have a couple months of data to see whether it’s more strongly confirmed.

Rosengren has long advocated for more monetary accommodation than most of his colleagues at the central bank…. One senses greater impatience on the more hawkish side of the FOMC. They will argue like Mester that the general consistency of underlying growth, steady improvement in labor utilization, and proximity to mandates signals it is time to leave behind the policies of the financial crisis…

DeLong and Eichengreen: New Preface to Charles Kindleberger, “The World in Depression 1929-1939”: Hoisted from the Grasping Reality Archives

New Preface to Charles Kindleberger, “The World in Depression 1929-1939”:


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J Bradford DeLong and Barry J. Eichengreen: New preface to Charles Kindleberger,* The World in Depression 1929-1939*:

The parallels between Europe in the 1930s and Europe today are stark, striking, and increasingly frightening. We see unemployment, youth unemployment especially, soaring to unprecedented heights. Financial instability and distress are widespread. There is growing political support for extremist parties of the far left and right.

Both the existence of these parallels and their tragic nature would not have escaped Charles Kindleberger, whose World in Depression, 1929-1939 was published exactly 40 years ago, in 1973.[1]  Where Kindleberger’s canvas was the world, his focus was Europe. While much of the earlier literature, often authored by Americans, focused on the Great Depression in the US, Kindleberger emphasised that the Depression had a prominent international and, in particular, European dimension. It was in Europe where many of the Depression’s worst effects, political as well as economic, played out. And it was in Europe where the absence of a public policy authority at the level of the continent and the inability of any individual national government or central bank to exercise adequate leadership had the most calamitous economic and financial effects.[2]

These were ideas that Kindleberger impressed upon generations of students as well on his reading public. Indeed, anyone fortunate enough to live in New England in the early 1980s and possessed of even a limited interest in international financial and monetary history felt compelled to walk, drive or take the T (as metropolitan Boston’s subway is known to locals) down to MIT’s Sloan Building in order to listen to Kindleberger’s lectures on the subject (including both the authors of this preface). We understood about half of what he said and recognised about a quarter of the historical references and allusions. The experience was intimidating: Paul Krugman, who was a member of this same group and went on to be awarded the Nobel Prize for his work in international economics, has written how Kindleberger’s course nearly scared him away from international macroeconomics. Kindleberger’s lectures were surely “full of wisdom”, Krugman notes. But then, “who feels wise in their twenties?” (Krugman 2002).

There was indeed much wisdom in Kindleberger’s lectures, about how markets work, about how they are managed, and especially about how they can go wrong. It is no accident that when Martin Wolf, dean of the British financial journalists, challenged then former-US Treasury Secretary Lawrence Summers in 2011 to deny that economists had proven themselves useless in the 2008-9 financial crisis, Summers’s response was that, to the contrary, there was a useful economics. But what was useful for understanding financial crises was to be found not in the academic mainstream of mathematical models festooned with Greek symbols and complex abstract relationships but in the work of the pioneering 19th century financial journalist Walter Bagehot, the 20th-century bubble theorist Hyman Minsky, and “perhaps more still in Kindleberger” (Wolf and Summers 2011).

Summers was right. We speak from personal experience: for a generation the two of us have been living – very well, thank you – off the rich dividends thrown off by the intellectual capital that we acquired from Charles Kindleberger, earning our pay cheques by teaching our students some small fraction of what Charlie taught us. Three lessons stand out, the first having to do with panic in financial markets, the second with the power of contagion, the third with the importance of hegemony.

First, panic. Kindleberger argued that panic, defined as sudden overwhelming fear giving rise to extreme behaviour on the part of the affected, is intrinsic in the operation of financial markets. In The World in Depression he gave the best ever “explain-and-illustrate-with-examples” answer to the question of how and why panic occurs and financial markets fall apart. Kindleberger was an early apostate from the efficient-markets school of thought that markets not just get it right but also that they are intrinsically stable. His rival in attempting to explain the Great Depression, Milton Friedman, had famously argued that speculation in financial markets can’t be destabilising because if destabilising speculators drive asset values away from justified, or equilibrium, levels, such speculators will lose money and eventually be driven out of the market.[3]

Kindleberger pushed back by observing that markets can continue to get it wrong for a very, very long time. He girded his position by elaborating and applying the work of Minsky, who had argued that markets pass through cycles characterised first by self-reinforcing boom, next by crash, then by panic, and finally by revulsion and depression. Kindleberger documented the ability of what is now sometimes referred to as the Minsky-Kindleberger framework to explain the behaviour of markets in the late 1920s and early 1930s – behaviour about which economists otherwise might have arguably had little of relevance or value to say. The Minsky paradigm emphasising the possibility of self-reinforcing booms and busts is the organising framework of The World in Depression. It then comes to the fore in all its explicit glory in Kindleberger’s subsequent book and summary statement of the approach, Mania, Panics and Crashes.[4]

Kindleberger’s second key lesson, closely related, is the power of contagion. At the centre of The World in Depression is the 1931 financial crisis, arguably the event that turned an already serious recession into the most severe downturn and economic catastrophe of the 20th century. The 1931 crisis began, as Kindleberger observes, in a relatively minor European financial centre, Vienna, but when left untreated leapfrogged first to Berlin and then, with even graver consequences, to London and New York. This is the 20th century’s most dramatic reminder of quickly how financial crises can metastasise almost instantaneously. In 1931 they spread through a number of different channels. German banks held deposits in Vienna. Merchant banks in London had extended credits to German banks and firms to help finance the country’s foreign trade. In addition to financial links, there were psychological links: as soon as a big bank went down in Vienna, investors, having no way to know for sure, began to fear that similar problems might be lurking in the banking systems of other European countries and the US.

In the same way that problems in a small country, Greece, could threaten the entire European System in 2012, problems in a small country, Austria, could constitute a lethal threat to the entire global financial system in 1931 in the absence of effective action to prevent them from spreading.

This brings us to Kindleberger’s third lesson, which has to do with the importance of hegemony, defined as a preponderance of influence and power over others, in this case over other nation states. Kindleberger argued that at the root of Europe’s and the world’s problems in the 1920s and 1930s was the absence of a benevolent hegemon: a dominant economic power able and willing to take the interests of smaller powers and the operation of the larger international system into account by stabilising the flow of spending through the global or at least the North Atlantic economy, and doing so by acting as a lender and consumer of last resort. Great Britain, now but a middle power in relative economic decline, no longer possessed the resources commensurate with the job. The rising power, the US, did not yet realise that the maintenance of economic stability required it to assume this role. In contrast to the period before 1914, when Britain acted as hegemon, or after 1945, when the US did so, there was no one to stabilise the unstable economy. Europe, the world economy’s chokepoint, was rendered rudderless, unstable, and crisis- and depression-prone.

That is Kindleberger’s World in Depression in a nutshell. As he put it in 1973:

The 1929 depression was so wide, so deep and so long because the international economic system was rendered unstable by British inability and United States unwillingness to assume responsibility for stabilising it in three particulars: (a) maintaining a relatively open market for distress goods; (b) providing counter-cyclical long-term lending; and (c) discounting in crisis…. The world economic system was unstable unless some country stabilised it, as Britain had done in the nineteenth century and up to 1913. In 1929, the British couldn’t and the United States wouldn’t. When every country turned to protect its national private interest, the world public interest went down the drain, and with it the private interests of all…

Subsequently these insights stimulated a considerable body of scholarship in economics, particularly models of international economic policy coordination with and without a dominant economic power, and in political science, where Kindleberger’s “theory of hegemonic stability” is perhaps the leading approach used by political scientists to understand how order can be maintained in an otherwise anarchic international system.[5]

It might be hoped that something would have been learned from this considerable body of scholarship. Yet today, to our surprise, alarm and dismay, we find ourselves watching a rerun of Europe in 1931. Once more, panic and financial distress are widespread. And, once more, Europe lacks a hegemon – a dominant economic power capable of taking the interests of smaller powers and the operation of the larger international system into account by stabilising flows of finance and spending through the European economy.

The ECB does not believe it has the authority: its mandate, the argument goes, requires it to mechanically pursue an inflation target – which it defines in practice as an inflation ceiling. It is not empowered, it argues, to act as a lender of the last resort to distressed financial markets, the indispensability of a lender of last resort in times of crisis being another powerful message of The World in Depression. The EU, a diverse collection of more than two dozen states, has found it difficult to reach a consensus on how to react. And even on those rare occasions where it does achieve something approaching a consensus, the wheels turn slowly, too slowly compared to the crisis, which turns very fast.

The German federal government, the political incarnation of the single most consequential economic power in Europe, is one potential hegemon. It has room for countercyclical fiscal policy. It could encourage the European Central Bank to make more active use of monetary policy. It could fund a Marshall Plan for Greece and signal a willingness to assume joint responsibility, along with its EU partners, for some fraction of their collective debt. But Germany still thinks of itself as the steward is a small open economy. It repeats at every turn that it is beyond its capacity to stabilise the European system: “German taxpayers can only bear so much after all”. Unilaterally taking action to stabilise the European economy is not, in any case, its responsibility, as the matter is perceived. The EU is not a union where big countries lead and smaller countries follow docilely but, at least ostensibly, a collection of equals. Germany’s own difficult history in any case makes it difficult for the country to assert its influence and authority and equally difficult for its EU partners, even those who most desperately require it, to accept such an assertion.[6] Europe, everyone agrees, needs to strengthen its collective will and ability to take collective action. But in the absence of a hegemon at the European level, this is easier said than done.

The International Monetary Fund, meanwhile, is not sufficiently well capitalised to do the job even were its non-European members to permit it to do so, which remains doubtful. Viewed from Asia or, for that matter, from Capitol Hill, Europe’s problems are properly solved in Europe. More concretely, the view is that the money needed to resolve Europe’s economic and financial crisis should come from Europe. The US government and Federal Reserve System, for their part, have no choice but to view Europe’s problems from the sidelines. A cash-strapped US government lacks the resources to intervene big-time in Europe’s affairs in 1948; there will be no 21st century analogue of the Marshall Plan, when the US through the Economic Recovery Programme, of which the young Charles Kindleberger was a major architect, extended a generous package of foreign aid to help stabilise an unstable continent. Today, in contrast, the Congress is not about to permit Greece, Ireland, Portugal, Italy, and Spain to incorporate in Delaware as bank holding companies and join the Federal Reserve System.[7]

In a sense, Kindleberger predicted all this in 1973. He saw the power and willingness of the US to bear the responsibility and burden of sacrifice required of benevolent hegemony as likely to falter in subsequent generations. He saw three positive and three negative branches on the then-future’s probability tree. The positive outcomes were: “[i] revived United States leadership… [ii] an assertion of leadership and assumption of responsibility… by Europe…” [sitting here, in 2013, one might be tempted to add emerging markets like China as potentially stepping into the leadership breach, although in practice the Chinese authorities have been reluctant to go there, and] [iii] cession of economic sovereignty to international institutions….” Here, in a sense, Kindleberger had both global and regional – meaning European – institutions in mind. “The last”, meaning a global solution, “is the most attractive”, he concluded,” but perhaps, because difficult, the least likely…” The negative outcomes were: “(a) the United States and the [EU] vying for leadership… (b) one unable to lead and the other unwilling, as in 1929 to 1933… (c) each retaining a veto… without seeking to secure positive programmes…”

As we write, the North Atlantic world appears to have fallen foul to his bad outcome (c), with extraordinary political dysfunction in the US preventing its government from acting as a benevolent hegemon, and the ruling mandarins of Europe, in Germany in particular, unwilling to step up and convince their voters that they must assume the task.

It was fear of this future that led Kindleberger to end The World in Depression with the observation: “In these circumstances, the third positive alternative of international institutions with real authority and sovereignty is pressing.”

Indeed it is, more so now than ever.

References

Eichengreen, Barry (1987), “Hegemonic Stability Theories of the International Monetary System”, in Richard Cooper, Barry Eichengreen, Gerald Holtham, Robert Putnam and Randall Henning (eds.), Can Nations Agree? Issues in International Economic Cooperation, The Brookings Institution, 255-298.

Friedman, Milton (1953), “The Case for Flexible Exchange Rates”, in Essays in Positive Economics, University of Chicago Press.

Friedman, Milton and Anna J Schwartz (1963), A Monetary History of the United States, 1857-1960, Princeton University Press.

Gilpin, Robert (1987), The Political Economy of International Relations, Princeton University Press.

Keohane, Robert (1984), After Hegemony, Princeton University Press.

Kindleberger, Charles (1978), Manias, Panics and Crashes, Norton.

Krugman, Paul (2003), “Remembering Rudi Dornbusch”, unpublished manuscript, http://www.pkarchive.org, 28 July.

Lake, David (1993), “Leadership, Hegemony and the International Economy: Naked Emperor or Tattered Monarch with Potential?”, International Studies Quarterly, 37: 459-489.

Wolf, Martin and Lawrence Summers (2011), “Larry Summers and Martin Wolf: Keynote at INET’s Bretton Woods Conference 2011”, http://www.youtube.com, 9 April.

Notes

[1] Kindleberger passed away in 2003. A second modestly revised and expanded edition of The World in Depression was published, also by the University of California Press, in 1986. The second edition differed mainly by responding to the author’s critics and commenting to some subsequent literature. We have chosen to reproduce the ‘unvarnished’ 1973 Kindleberger, where the key points are made in unadorned fashion.

[2] The book was commissioned originally for a series on the economic history of Europe, with each author writing on a different decade. This points to the question of why the title was not, instead, “Europe in Depression.” The answer, presumably, is that the author – and his publisher wished to acknowledge that the Depression was not exclusively a European phenomenon and that the linkages between Europe and the US were also critically important.

[3] Friedman’s great work on the Depression, coauthored with Anna Jacobson Schwartz (1963), was in Kindleberger’s view too monocausal, focusing on the role of monetary policy, and too U.S. centric. See also Friedman (1953)

[4] Kindleberger (1978). Kindleberger amply acknowledged his intellectual debt to Minsky. But we are not alone if we suggest that Kindleberger’s admirably clear presentation of the framework, and the success with which he documented its power by applying it to historical experience, rendered it more impactful in the academy and generally.

[5] A sampling of work in economics on international policy coordination inspired by Kindleberger includes Eichengreen (1987) and Hughes Hallet, Mooslechner and Scheurz (2001). Three important statements of the relevant work in international relations are Keohane (1984), Gilpin (1987) and Lake (1993).

[6] The European Union was created, in a sense, precisely in order to prevent the reassertion of German hegemony.

[7] The point being that the US, in contrast, does possess a central bank willing, under certain circumstances, to acknowledge its responsibility for acting as a lender of last resort. Nothing in fact prevents the Federal Reserve, under current institutional arrangements from, say, purchasing the bonds of distressed Southern European sovereigns. But this would be viewed as peculiar and inappropriate in many quarters. The Fed has a full plate of other problems. And intervening in European bond markets, the argument would go, is properly the responsibility of the leading European monetary authority.

Must-Read: Barry Eichengreen: Saving Greece, Saving Europe

Must-Read: Barry Eichengreen: Saving Greece, Saving Europe: “The Greek people deserve better than what they are being offered…

…Germany wants Greece to choose between economic collapse and leaving the eurozone. Both options would mean economic disaster; the first, if not both, would be politically disastrous as well. When I wrote in 2007 that no member state would voluntarily leave the eurozone, I emphasized the high economic costs of such a decision. The Greek government has shown that it understands this…. But when I concluded that no country would leave the eurozone, I failed to imagine that Germany would force another member out….

Economically, the new program is perverse, because it will plunge Greece deeper into depression. It envisages raising additional taxes, cutting pensions further, and implementing automatic spending cuts if fiscal targets are missed. But it provides no basis for recovery or growth. The Greek economy is already in free-fall, and structural reforms alone will not reverse the downward spiral. The agreement… will worsen Greece’s slump…. As the depression deepens, the deficit targets will be missed, triggering further spending cuts and accelerating the economy’s contraction. Eventually, the agreement will trigger Grexit, either because the creditors withdraw their support after fiscal targets are missed, or because the Greek people rebel…. Finally, the privatization fund at the center of the new program will do nothing to encourage structural reform. Yes, Greece needs to privatize inefficient public enterprises. But… privatization at fire-sale prices, with most of the proceeds used to pay down debt, will not put Greek parliamentarians or the public in a mood to press ahead enthusiastically with structural reform.

Greece deserves better… a program that respects its sovereignty and allows the government to establish its credibility… a program capable of stabilizing its economy rather than bleeding it to death. And it deserves support from the ECB…. Europe deserves better, too. Other European countries should not in good conscience accede to this politically destructive, economically perverse program…. Last but not least, the German public deserve better. Germans deserve a leader who stands firm in the face of extremism, rather than encouraging it…

Must-Read: Paul Krugman: The Laziness Dogma

Must-Read: Paul Krugman: The Laziness Dogma: “The real source of [J.E.B. Bush’s] remark was the ‘nation of takers’ dogma that has taken over conservative circles…

…the insistence that a large number of Americans, white as well as black, are choosing not to work, because they can live lives of leisure thanks to government programs. You see this laziness dogma everywhere on the right… the hidden background to Mitt Romney’s infamous 47 percent… the furious attacks on unemployment benefits at a time of mass unemployment and on food stamps… claims that many, if not most, workers receiving disability payments are malingerers… a vision of the world in which the biggest problem facing America is that we’re too nice to fellow citizens facing hardship….

Over the past few decades working-class white families have been changing in much the same way that African-American families changed in the 1950s and 1960s, with declining rates of marriage and labor force participation. Some of us look at these changes and see them as consequences of an economy that no longer offers good jobs to ordinary workers. This happened to African-Americans first, as blue-collar jobs disappeared from inner cities, but has now become a much wider phenomenon thanks to soaring income inequality. Mr. Murray, however, sees the changes as the consequence of a mysterious decline in traditional values, enabled by government programs which mean that men no longer ‘need to work to survive.’ And Mr. Bush presumably shares that view…. Mr. Bush’s clumsy call for longer work hours wasn’t a mere verbal stumble. It was, instead, an indication that he stands firmly on the right side of the great divide over what working American families need…. While Jeb Bush may sometimes sound like a moderate, he’s very much in line with the party consensus… [of] the laziness dogma…

Must-Read: Daniel Davies: Groptimism

Must-Read: Daniel Davies: Groptimism: “Well, a deal is done…. And any deal was better than no deal….

…It seems more likely than not that we’ll see a sharp rebound in [Greek] economic growth in Q4…. A lot of the debt service money goes to the ECB and IMF, it’s true, but enough of the outstanding GGBs are owned by Greek residents to make it likely that the fiscal stance right now is stimulative…. The Greek banking system is not broken. Although the branches are closed, the ATMs are limited and capital controls are in place, these are the results of a government crisis that spread to the banks, not a banking crisis that spread to the government…. Flight capital moves both ways…. There is potentially a lot of pent up investment demand…. Greece has spent the last six months living under the shadow of a currency crisis. Of course that affects investment…. Moving Greece away from the edge of the precipice is very likely to have a positive effect on investment spending.

So, if we believe in the national income accounting identity… it very much makes sense to look for a bounce back…. Now… optimism for the near term do[es]n’t all stretch out into the medium term. In particular, the primary surpluses are scheduled to rise, and the new agreement has (stupidly) incorporated a debt-brake sort of idea–a kind of “automatic destabiliser” to cut spending if the surplus targets are missed. So for 2016 and onward, the I and X components might have to take on more of the work, if the Eurogroup turns out to be determined to go through with a bad idea on G…. But, with a bit of good will and good sense, things look a lot better than they did a week ago. The outlook isn’t all bad, by any means.

The vexing question of the U.S. housing bubble origins

Back in 2005, a massive increase in mortgage credit and U.S. housing prices resulted in household debt almost doubling.  Today, while the consequences of that bubble are still very evident, the dynamics  of the housing bubble are not fully understood. A debate about these dynamics continues courtesy of a new National Bureau of Economic Research working paper released yesterday, featuring arguments between two teams of economists.

One side of the debate, Atif Mian of Princeton University and Amir Sufi from the University of Chicago, have long argued that credit growth in the 2000s flowed to low-income borrowers who used the credit to replace wage growth and keep their consumption up. Mian and Sufi’s extensive data work shows that zip codes with low-income growth and low credit scores saw high levels of credit growth during the housing bubble.

Earlier this year, another research team published a working paper that challenged some of the findings of Mian and Sufi’s 2009 paper. These economists, Manuel Adelino of Duke University, Antoinette Schoar of the Massachusetts Institute of Technology, and Felipe Severino of Dartmouth College, argue that Mian and Sufi’s focus on zip codes does not consider that the composition of buyers changed over the time within zip codes. The three researchers show that, within zip codes, the growth of credit accrued to middle- and higher-earning households whose income was growing.

Mian and Sufi replied with two papers. The first paper argues that Adelino, Schoar, and Severino’s choice of income source– reported income from mortgage applications–was prone to fraud, and therefore overstated the positive relationship between income  and credit growth. The second paper notes that the three economists sort their mortgage by credit scores in 2006, and that these scores were themselves influenced by the run up in housing prices. Therefore, they are not an unbiased measure of borrowers’ status when the bubble started.

The new working paper released yesterday by Adelino, Schoar, and Severino responds to Mian and Sufi’s criticisms. On the first point, the three economists point out that their original paper also used tax data from the Internal Revenue Service, and that the positive relationship between individual borrowers and credit growth holds up. But, they maintain, even when they do use income data from mortgage applications, the relationship still holds up if they look at areas where misreporting wasn’t a major problem. The three economists contend that if misreporting were driving all of their results, then zip codes where fewer mortgages purchased by mortgage finance giants Freddie Mac and Fannie Mae—and therefore more likely to be fraudulent—would have stronger correlations between income growth and credit growth. But that doesn’t show up in the data.

On the second point, Adelino, Schoar and Severino concede that using 2006 credit scores does mean that they are biased up. But the level of bias, according to their analysis, is so small (at the most 18 points) as to not have an effect on their analysis. This means that Mian and Sufi’s argument that households that were really low-credit ones but got sorted upward arbitrarily wouldn’t hold up. In fact, the three economists claim that the data analysis in Mian and Sufi’s second paper actually supports their original analysis.

Ultimately, what is at stake in this debate? Adelino, Schoar, and Severino agree with Mian and Sufi that low-credit score zip codes saw large increases in credit. The resulting debate seems to be about which households took on the debt—a question not addressed by Mian and Sufi in their 2009 paper. But a 2011 paper by the pair does find that increased home equity loans by existing homeowners explained a significant part of the increase in household debt during the bubble years. So perhaps there is some agreement there. We are left with the question: How much of the defaulting debt was in the hands of low-credit score individuals (those in the bottom 20 percent)? The dates for the two different estimates don’t overlap.  In 2006, Mian and Sufi have the share at a bit over 40 percent, whereas Adelino, Schoar, and Severino have it at 36 percent. What seems still up for debate is the importance of the level by credit score versus the trend.

A response from Mian and Sufi may be forthcoming, but the recent paper seem to be converging to a spot closer to Mian and Sufi’s work. These debates that take place in gated working papers may seem far removed from everyday life, but they actually have important implications for our understanding of the link between credit and its allocation, wealth inequality, and economic stability then and now.

Must-Read: Matthew Yglesias: The Retirement Age

Must-Read: Matthew Yglesias: The Retirement Age: “Raising the retirement age is a strange prescription for countries suffering from mass youth unemployment…

…If you have a country — Greece, say, or France — where youth unemployment is very high, it’s strange to decide that raising the retirement age is the cure for your economic woes…. A jobless person in their twenties living on social assistance is a sad case. A jobless person in their sixties living on social assistance is retired, which is a perfectly respectable thing to be in life. Retired people are happy and unemployed people are sad…. Somebody has to work and pay the taxes so that others can not work.

Young people, generally, would rather have a job than a social assistance check whereas older people would rather have a social assistance check than a job. This is what makes it so odd to look at a country with high youth unemployment and decide that what’s needed is a higher retirement age…. The larger point is that raising the retirement age is an idée fixe of the global elite. I recently read an IMF report about Finland… a great country with a world-class education system, the #3 least-corrupt government… other strong fundamentals. But they’ve run into a very non-mysterious economic problem — Nokia has gone to shit. Somehow the IMF’s solution to this is that Finland should raise its retirement age…