Eurosclerosis update

 

All pre-covid. European GDP per capita fell in the decade following the financial crisis. US growth was nothing to write home about, but things could be worse. The we-should-be-more-like-Europe crowd has some explaining to do. (The Word Bank's software misplaced the UK label; it is the red line on the top of the European group.) From the World Bank, HT Marginal Revolution.

The graph is in dollars, so part of the effect is that the dollar got more valuable relative to the euro. (Thanks to the commenters who noticed that I misread the graph caption. Blog post now fixed to reflect that.) 

Update

A correspondent sends along the following graph from IMF data. IMF data uses PPP adjustments, not straight conversion to dollars. So the exchange rate really is an issue in comparing US to EU growth.  

Relative inflation has not been that different between the two countries. 

At least by these measures, EU inflation has been only very slightly less than US inflation 

So indeed, the exchange rate is the major part of the difference between the two graphs. Whether PPP or actual exchange rates are "right" for this purpose I leave for another day. Certainly the average American's ability to buy European goods has risen relative to the average European's ability to buy American goods. Why exchange rates diverge so long from PPP measures remains, I think, a central puzzle. But thanks to blog readers for quickly pointing out that the Marginal Revolution graph isn't as immediately relevant as it seemed. 

Europe productivity -- and US too

 

 Source Stephan Schubert

Source: Chad Jones "straight out of the Penn World Tables, and I first learned about it from Lee Ohanian and Jesus Fernandez-Villaverde"

In the top graph you get the impression that German and French workers are using up to date technology, including both machines, firm organization,  opportunities to trade in a wide market, etc. but that they simply choose to, are incented to, or forced to work fewer hours than US workers. Italy and UK are still plodding along 20% or so inside the frontier.

The bottom graph points a bleaker picture. I'm not an expert, but if labor productivity is high and total productivity is low, that means that the productivity of other inputs must be atrocious.  Chad (amazing expert on all things growth) "It is stunning to me that Spain and Italy have had negative TFP growth for 20 years." 

I remember when real business cycles came out, and many were incredulous at the idea of negative productivity shocks. How can you forget how to do things? Well, maybe not for business cycles, but a society clearly can forget, and retrench. For centuries, remember, Italians looked up in wonder at the cupola of the Pantheon, the arches of the dry aqueducts, and wondered how they had been built. 

Source: Eli Dourado.  

Before you get all "go USA", let us not forget the largest economic disaster of our own times. These are all relative to the US. How is the US doing? Productivity slowed down suddenly, sharply, and it seems permanently around 2000. 

In the long run, nothing else matters. GDP buys you health, advancement of the disadvantaged, social programs, international security, and climate if you are so inclined. Without GDP, you get less of all.  Economic policy should have one central goal -- get productivity growing again, or (in my view) get out of the way of its growth. This is the one little hope that has not been let out of the policy Pandora's box, focused on everything else right now. 

Update: 

John Fernald and Bing Wang date the recent slowdown at 2003. The end of the first tech boom has something to do with it -- but why hasn't the second tech boom shown up in more productivity? 

Ed Prescott's famous Ely Lecture* looked at US vs. France and concluded high marginal tax rates reduced French working hours. 

Many commenters chalk it up to culture and a preference for leisure. I'm old enough to remember when French people worked Saturday mornings and chuckled at the lazy English who took the whole weekend off. An important work of social science on this question here.  

An excellent Vox Post by Fadi Hassan and Gianmarco Ottaviano on Italian productivity. Too much investment in the wrong places, not enough computers. I speculate also too-small companies. Labor laws, regulations and taxes make it desirable to stay small, private, family-run -- and thus local, non-financialized. 

*BTW, looking up the citation, I learned that the AEA canceled Ely of the Ely lecture, and renamed the lecture series. 

The puzzle of Europe

Here are two unsettling slides I made for a talk. Here is GDP per capita in US, UK, France and Italy and China (2020 dollars, source world bank) 

To make the comparison easier, here is each country not including China, divided by the US: 

Here are the 2019 numbers (in 2019 dollars, again World Bank) US: $65,297. UK $42,330. That's 35% less than the US. Or, the US is  54% better off than the UK.. France: $40,494. Italy: $33,228 That's 50% less than US. Or the US is 96% better off than Italy.  China: $20,261.

And it's been getting steadily worse. France got almost to the US level in 1980. And then slowly slipped behind. The UK seems to be doing ok, but in fact has lost 5 percentage points since the early 2000s peak. And Italy... Once noticeably better off than the UK, and contending with France, Italy's GDP per capita is now lower than it was in 2000. 

GDP per capita is income per capita. The average European is about a third or more worse off than the average American, and it's getting worse. 

What the heck happened? It could happen here too. Maybe it already has, just not as bad. 

This should be profoundly unsettling for economists.  Everyone thinks free trade is a good thing. The European union, one big integrated market, was supposed to ignite growth. It did not. The grand failure of the world's biggest free trade zone really is a striking fact to gnaw on. 

Sure, other things are not held constant. Perhaps what should have been the world's biggest free trade zone became the world's biggest regulatory-stagnation, high-tax, welfare-state disincentive zone. Still, "it would have been even worse" is a hard argument to make. 

Economists haven't been talking about Eurosclerosis for a while but I think we should. 

These are huge numbers. The worst estimates of climate change are 7% of GDP in 2100. And those are surely overstated (see the excellent new paper by José Luis Cruz and Estban Rossi-Hansberg) You may admire the NHS for saving money, but even if the 20% of GDP we spend on health care is totally wasted, we're still ahead.  Lots of people admire the European model. Just how far Europe is behind the US is remarkable -- and getting worse. 

(Follow up post on productivity) 

Low Interest Rates and Government Debt

This is a talk I gave for IGIER at Bocconi (zoom, sadly) Jan 11 2021. Olivier Blanchard also gave a talk and a good discussion followed. Yes, some content is recycled, but on an important topic one must go back to refine and rethink ideas. This post has mathjax equations and graphs. If you don't see them, come back to the blog or read the pdf version. Update: Video of the presentations. 

Low Interest Rates and Government Debt
John H. Cochrane
Hoover Institution
Prepared for the IGIER policy seminar, January 11 2021

1. Why are real interest rates so low? (And thus, when and how will that change?)

Figure 1. 10 year US treasury rate and core CPI.

As Figure 1 shows, real and nominal interest rates have been on a steady downward trend since 1980. The size, steadiness and durability of that trend mean that we must look for large basic economic forces. “Savings gluts,” foreign exchange reserves, quantitative easing, lower bounds, forward guidance bond market frictions and so forth may be important icing on the cake, but they are not the cake. They cannot account for such a long-lasting steady trend.

The most basic economics states that the real interest rate equals people’s rate of impatience, plus growth times a coefficient usually thought to be between one and two. The interest rate is also equal to the marginal product of capital. In equations*, \[r = \delta + \gamma g \].  

Figure 2. Real potential GDP growth. 

Figure 2 presents the growth of potential GDP, as one easy way to look at long run growth trends. Potential GDP grew 4.5% in the 1960s, 3% in the 1970s, had a spurt in the late 1990s, and then settled down to less than 2% now. This slowdown in long-term growth is the great and unheralded economic disaster of our time. But that’s for another day.

The most natural explanation for the decline in real interest rates, then, is that growth has declined. A coefficient greater than one brings interest rates down faster than growth rates, opening the question that the interest rate r might even be below the growth rate g.

CBDC in EU

I wrote an oped for Il Sole 24 Ore on central bank digital currency, as part of a series they are doing. It's here in their premium edition (gated) here on their blog, in Italian on top and English below. Thanks much to Luciano Somoza and Tammaro Terracciano for translation and inspiring the project.

THE DIGITAL EURO IS A THREAT TO BANKS AND GOVERNMENTS. AND THAT’S OK. 

A central bank digital currency (CBDC) is in principle a very good idea. It offers the possibility of very low-cost transactions to households and businesses, especially in securities and international transactions. More excitingly, CBDC offers us a foundation for an efficient and nimble financial system that is completely insulated from recurrent crises. 

But CBDC poses a puzzle, as it undercuts many of governments’ and central banks other questionable objectives. Central banks want to prop up conventional banks, who benefit from taking deposits. And governments are unlikely to want to allow the anonymity that is the great attribute of physical cash. 

One vision for CBDC basically gives everyone access to bank reserves. Reserves are interest-paying accounts that banks hold at the central bank. When bank A wishes to pay bank B, it notifies the central bank, which just changes the numbers in each account on the central bank’s computer. The transaction can be accomplished in milliseconds, and costs basically nothing. Why don’t we have that? We should.

Challenges for central banks.

On October 20, I was graciously invited to give a talk at the  ECB Conference on Monetary Policy: bridging science and practice. 

I survey six challenges facing central banks: 1. Interest rates and inflation; 2. Policy reviews; 3. Financial reform post 2008 4. New challenges to finance post covid; 5. The many risks ahead; 6. Central banks and climate.  

For the whole thing, go here for a pdf. A video of my presentation is here. (The conference website will have all videso soon.) Items 1-5 are mostly interesting for monetary economists, though general readers might find my summary and distillation of the Fed policy review of some interest. 

Here, I post the section on climate change and conclusion, which are the most novel. And if you like the general approach and want to see it applied to the rest of what central banks are up to, that's another advertisement to read the whole talk pdf. 

In the section leading up to this, I describe risks to the financial system from widespread defaults, sovereign defaults, a US debt and currency crisis, another bigger pandemic, war, political chaos, cyber disaster and a few other unpleasant possibilities. But covid has taught us to prepare for the unexpected.  

....Which brings me to a great puzzle. In this context why are the ECB, BoE, BIS, IMF consumed with one and only one “risk”… climate? 

Challenge 6. Climate, Mission creep, and Politicization risk. 

I think this adventure is a dangerous mistake. 

Disclaimer: I do not argue that climate change is fake or unimportant. None of my comments reflect any argument with scientific fact. (I favor a uniform carbon tax in return for essentially no regulation.) 

The question is whether the ECB, other central banks, and international institutions such as the IMF, BIS, and OECD should appoint themselves to take on climate policy, or other important social, environmental or political causes, without a clear mandate to do so from politically accountable leaders. 

Moreover, the ECB and others are not just embarking on climate policy in general. They are embarking on the enforcement of one particular set of climate policies — policies to force banks and private companies to de-fund fossil fuel industries, even while alternatives are not available at scale, and to provide subsidized funding to an ill-defined set of “green” projects. 

To be concrete, I quote from Executive Board Member Isabel Schnabel’s recent speech. I don’t mean to pick on her, but she expresses the climate agenda very well, and her speech bears the ECB imprimatur. She recommends

"First, as prudential supervisor, we have an obligation to protect the safety and soundness of the banking sector. This includes making sure that banks properly assess the risks from carbon-intensive exposures…"

Let me speak out loud the unclothed emperor fact: Climate change does not pose any financial risk, at the 1, 5 or even 10 year horizon at which one can conceivably assess the risk to bank assets.

“Risk” means variance, unforeseen events. We know exactly where the climate is going in the next 5 to 10 years. Hurricanes and floods, though influenced by climate change, are well modeled for the next 5 to 10 years. Advanced economies and financial systems are remarkably impervious to weather. Relative market demand for fossil vs. alternative energy is as easy or hard to forecast as anything else in the economy. Exxon bonds are factually safer, financially, than Tesla bonds, and easier to value. The main risk to fossil fuel companies is that regulators will destroy them, as the ECB proposes to do, a risk regulators themselves control. And political risk is a standard part of bond valuation. 

That banks are risky because of exposure to carbon-emitting companies, that carbon-emitting company debt is financially risky because of unexpected changes in climate, in ways that conventional risk measures do not capture, that banks need to be regulated away from that exposure because of risk to the financial system is nonsense. (And if it were not nonsense, regulating bank liabilities away from short term debt and towards more equity would be a more effective solution to the financial problem.) 

Podcast and Goodfellows

Here are links to this week's grumpy economist podcast, and Goodfellows discussion with Niall Ferguson and H.R.  McMaster. Grumpy on the careful reopening and debt. Goodfellows on Europe.



Carnivorous Moose (?)
 

Institutionalized nonsense

When, last week, the Treasury issued its currency manipulation report, I thought it was a joke. Treasury put Germany and Italy on its "monitoring list" of countries suspected of "currency manipulation."

Germany and Italy are, of course, part of the Euro, the whole point of which is that they cannot, individually, "manipulate" their currencies, whatever that means. It is precisely this inability to devalue -- to "manipulate" the Drachma to regain "competitiveness" (another meaningless term) -- that conventional wisdom bemoaned of Greece.

I had a little chuckle, envisioning some frustrated mid-level Treasury economist bemoaning the trade and currency idiocy floating around Washington, putting this little message in a bottle to see if anyone noticed the reductio ad absurdum.  If so, hello there, somebody noticed.

But then  read the report.

Europe's Banks

My visit to Europe resulted in many interesting conversations. There was a stark contrast between the complex regulatory vision of formal presentations and papers, and the lunch and coffee discussion reflecting experience of people involved in actually regulating banks. They seemed to be quite frustrated by the state of things. Disclaimer: this is all completely unverified gossip, and remembered through a fog of jet lag. If commenters have better facts, I'm hungry to hear them.

Risk weights are ungodly complex, and not many people actually understand them, or the layers of buffers and how they are applied.

Risk weights are suspiciously low. Big banks are allowed to use their own models, calibrated on 10 years of data. That means the data have, now, 10 years of stable growth and very low default. Look, say the banks, our investments are nearly risk free.

"Micro" regulators who look at the specifics of an individual bank are prone to offset the "systemic" and "macro-prudential" efforts. Look, say the banks, we have to fulfill all these macro-prudential rules, give us a break. Regulators do.

The financial regulatory community has been preoccupied with writing reports about one thing after another. Meanwhile, the elephant remains in the room:  Italy may default or leave the euro.

Italian banks remain stuffed with Italian government bonds. I learned some new words for this: a "doom loop." If the government defaults, the banks go with it.  Some smaller foreign banks still have large investments in Italian bonds. Another new word: "Moral suasion," governments encouraging banks to buy a lot of their bonds.  I imagine the Godfather had more colorful words for it. On the other hand, Italian banks are reportedly happy for the moment, since as long as Italy doesn't actually default, they make a bundle from high interest rates. Government debt is still treated with low or no risk weights.

Dollarize Argentina

Argentina should dollarize, says Mary Anastasia O'Grady in the Wall Street Journal -- not a peg, not a currency board, not an IMF plan, just give up and use dollars.

Another currency crisis is roiling Argentina... The peso has lost half its value against the U.S. dollar since January. Inflation expectations are soaring. 

The central bank has boosted its overnight lending rate to an annual 60% to try to stop capital flight. But Argentines are bracing for spiraling prices and recession. 

...the troubles have been brewing for some time. On a trip to Buenos Aires in February, I got an earful from worried economists who said Mr. Macri was moving too slowly to reconcile fiscal accounts. 

In 2016 and 2017 the government continued spending beyond its means and borrowing dollars in the international capital markets to finance the shortfall. That put pressure on the central bank to print money so as not to starve the economy of low-priced credit ahead of midterm elections in 2017.... 

A sharp selloff of the peso in May was followed by a new $50 billion standby loan from the International Monetary Fund in June. With a monetary base that is up over 30% since last year, in a nation that knows something about IMF intervention, that was like waving a red cape in front of a bull. 

The peso was thus vulnerable when currency speculators launched an attack on the Turkish lira last month and the flight to the dollar spilled over into other emerging markets, including Argentina. After decades of repeated currency crises, Argentines can smell monetary mischief. A peso rout ensued.

Conventional Wisdom these days -- the standard view around the Fed, IMF, OECD, BIS, ECB, and at NBER conferences -- says that countries need their own currencies, so they can quickly devalue to address negative "shocks." For example, conventional wisdom says that Greece would have been far better off with its own currency to devalue rather than as part of the euro. I have long been skeptical.

It's not working out so great for Argentina. As Mary points out, short term financing means there can be "speculative attacks" on the currencies of highly indebted countries that run their own currencies, just as there can be runs on banks. And Conventional Wisdom, silent on this issue advocating a Greek return to Drachma, was full in that the Asian crises of the late 1990s were due to "sudden stops," and such speculative machinations of international "hot money."

Well, says CW, including the IMF's "institutional view," that means countries need "capital flow management," i.e. governments need to control who can buy and sell their currency and and who can buy or sell assets internationally.  Yet Venezuela and Iran are crashing too, and not for lack of capital flow "management." My understanding is Argentina does not allow free capital either. Moreover, if there is a chance you can't take your money out, you don't put it in in the first place. There is a reason the post Bretton Woods international consensus drove out capital restrictions.

So I agree with Mary -- dollarize. Just get it over with. What possible benefit is Argentina getting from clever central bank currency manipulation, if you want a dark word, or management, if you want a good one? Use the meter and the kilogram too.

There is a catch, however, not fully explicit in Mary's article. The underlying problem is fiscal, not monetary. To repeat,

"Mr. Macri was moving too slowly to reconcile fiscal accounts. ...In 2016 and 2017 the government continued spending beyond its means and borrowing dollars in the international capital markets to finance the shortfall." 

So, I think it's a bit unfair for Mary to complain that Argentina's problem is that it "has a central bank." I don't know what any central banker could do, given the fiscal problems, to stop the currency from crashing.

If the government dollarizes, it can no longer inflate or devalue to get out of fiscal trouble. Argentina has pretty much already lost that option anyway. If the government borrows Pesos, inflating or devaluing eliminates that debt. But if the government borrows in dollars, a devaluation or inflation taxes a much smaller base of peso holders to try to pay back the dollar debt.

Still, a dollarized government must either pay back its bills or default. That's how the Euro was supposed to work too, until Europe's leaders, seeing how much Greek debt was stuffed into French and German banks, burned the rule book.

So the underlying problem is fiscal. With abundant fiscal resources, the government could have borrowed abroad to stop a run on the Peso. And without those resources, dollarization will not solve its debt and deficit problem. Dollarization will force the government to shape up fast, which may be Mary's point.

Dollarization will insulate the private economy from government fiscal troubles. This is a great, perhaps the greatest, point in its favor. Even if the government defaults, companies in a fully dollarized, free capital flow economy, can shrug it off and go about their business. Forced to use pesos, subject to sharp inflation, devaluation, capital and trade restrictions, the government's problems infect the rest of the economy.

Last, CW likes devaluation and inflation because it supposedly "stimulates" the economy through its troubles surrounding a crisis. That strikes me as giving a cancer patient an espresso. Argentina is getting both inflation and recession, not a stimulative boom out of its inflation.

Dollarization is not a currency board, which Argentina also tried and failed. A currency board is a promise to keep the peso equal to the dollar, and to keep enough dollars around to back the pesos. Alas, it does not keep dollars around to back all the governments' debts, so the government soon enough will see the kitty of dollars and grab them, abrogating the currency board. Dollarization means the economy uses dollars, period, and there is no pool of assets sitting there to be grabbed.

Nobel Symposium on Money and Banking Day 2

Day 2 of the Nobel Symposium on Money and Banking focused on monetary policy. (My last post covered Day 1 on banking.)

Bernanke

Sadly Ben Bernanke's video and slides are not up on the website. Ben showed some very interesting evidence that the crisis was an unpredictable run, rather than the usual story about predictable defaults resulting from too much credit. Things really did get suddenly a lot worse in September and October 2008. Yes, it's easy to say this is defense against the charge that he should have done more ahead of time. But evidence is evidence, and I find it quite plausible that the relatively small losses in subprime need not have caused such a massive crisis and recession absent a run. Ben says the material is part of a paper he will release soon, so look for it. One can understand that Bernanke is careful about releasing less than perfect drafts of papers and videos.

History

Barry Eichengreen gave a scholarly account of why history matters, especially the great depression, and we should pay more attention to it. (Paper, video.) He aimed squarely at typical economists whose knowledge stopped at Friedman and Schwartz, or perhaps Ben Bernanke's famous non-monetary channels paper, in which bank failures propagated the depression. He emphasized the role of the gold standard and international cooperation or non-cooperation, and warned against facile comparisons of the gold standard experience to today's events and the euro in particular.

Randy Kroszner has a great set of slides and an engaging presentation. He also started on parallels with the great depression, and told well the story of the US default on gold clauses. He closed with a warning about fighting the last war -- particularly apt given the exclusive focus of most of this conference on the events of 2008 -- and on how to start a crisis. In his view when Bank of England Gov Mervyn King said: “We will support Northern Rock." People hear "Northern Rock's in trouble? Run!" Likewise, in my view, speeches by President Bush and Treasury Secretary Paulson did a lot to spark the run in the US.

DSGE

A highlight for me, was the session on DSGE models.

Marty Eichenbaum (video, slides, subsequent paper) gave a nice review of the current status of new Keynesian DSGE models, and how they are developing in reaction to the financial crisis and recession, and the zero bound episode.

Harald Uhlig

Critiques, or more precisely lists of outstanding puzzles and challenges, are often more memorable and novel than positive summaries, and Harald Uhlig delivered a clear and memorable one. (Video, Slides)

Asset prices are a longstanding problem in DSGE models. In typical linearized form, the quantity dynamics are governed by intertemporal substitution, and the asset prices by risk aversion, and neither has much influence on the other. (I learned this from Tom Tallarini.) Rather obviously, our recent recession was all about risk aversion -- people stopped consuming and investing, and tried to move from private to government bonds because they were scared to death, not a sudden attack of thriftiness. There is a lot of current work going on to try to repair this deficiency, but it still lives in the land of extensions of the model rather than the mainstream. Harald also points out a frequently ignored implication of Epstein-Zin utility, the utility index reflects all consumption and anything that enters utility

Financial frictions are blossoming in DSGE models, in two forms: First, HANK or "heterogenous agent" models, which add things like borrowing constraints and uninsurable risks so that the distribution of income matters, and in an eternal quest to make the models work more like static ISLM. Second, in response to the financial crisis (see first day!) stylized models of banking and intermediary finance are showing up. I'm still a little puzzled that the more standard time-varying risk aversion part of macro-finance got ignored, (a plea here) but that is indeed what's going on.

The conundrum, here as elsewhere in DSGE, is that the more people play with the models, the further they get from their founding philosophy: macro models that do talk about monetary policy, (now) financial crises, but that obey the Lucas rules: Optimization, budget constraints, markets, or, more deeply, structures that have some hope of being policy invariant and therefore predictions that will survive the Lucas critique. Already, many ingredients such as Calvo pricing are convenient parables, but questionably realistic as policy-invariant.

Harald points out that since most of the frictions are imposed in a rather ad-hoc manner, neither will they be policy-invariant. This is a deeper and more realistic point than commonly realized. Every time market participants hit a "friction," they tend to innovate a way around that friction so it doesn't hurt them next time. Regulation Q on interest rates was once a "friction," and then the money market fund was invented. The result is too often "chicken papers:"

The understandable trouble is, if you try to microfound every single friction from Deep Theory -- just why it is that credit card companies put a limit on how much you can borrow, in terms of asymmetric information, moral hazard, and so forth -- the audience will be asleep long before you get to the data. Also, as we saw in day 1, there is (to put it charitably) a lot of uncertainty in just how contract or banking theory maps to actual frictions. I think we're stuck with ad-hoc frictions, if you want to go that route.

Harald's next point is, I think, his most devastating, as it describes a huge hole in current models that is not (unlike the last two) a point of immense current research effort. The Phillips curve and inflation are the central point of the New Keynesian DSGE model -- and a disaster. 

The Phillips curve is central. The point of the model is for monetary policy to have output effects. Money itself has (rightly) disappeared in the model, so the only channel for monetary policy to work is via the Phillips curve. Interest rates change inflation, and inflation causes output changes. No surprise, it is very hard for that model to produce anything like the last recession out of small changes in inflation. (I have to agree here with the premise of the financial frictions view -- if you want your model to produce the last recession, other than by one huge shock, the model needs something like a financial crisis.)

The Phillips curve in the data is well known

Less well known, but worth lots of attention, is how the now standard DSGE models completely fail to capture inflation. Harald's slide:

The point of the slide, in simpler form: The standard Phillips curve is

inflation today = beta x expected inflation next year + kappa x output gap  + shock

Essentially all inflation is accounted for by the shock. The model is basically silent about the source of inflation. Looking at the model as a whole, not just one equation, Neither monetary policy shocks nor changes in rules accounts for any significant amount of inflation. 

I made a similar graph recently. Use the standard three equation model

Now, use actual data on output y, inflation pi, and interest rate i, to back out the shocks v. Turn off the monetary policy shock vi = 0. Solve the model and plot the data -- what would have happened if the Fed had exactly followed the Taylor rule? 

Answer: Inflation and output would have been virtually the same. The inflation of the 1970s and its conquest in the 1980s had nothing to do with monetary policy mistakes. It is entirely the fault, and then fortunate consequence, of "marginal cost" shocks that come from out of the model. This is a pretty uncomfortable prediction of a model designed to be about monetary policy! Or, as Harald put it

• Data: no Phillips-Curve tradeoff.
• QDSGE: don’t account for inflation with monetary policy shocks.
• The NK / Phillips-Curve-based NK QDSGE models may thus provide a poor guide for monetary policy.

Wait, you ask, what about Marty Eichenbaum's pretty graphs, such as this one, showing the effects of a monetary policy shock?

The answer: After a lot of work, the effects of a monetary policy shock look (at last) about like what Milton Friedman said they should look like in 1968. But monetary policy shocks don't account for any but a tiny part of output and inflation variation, quite contra Friedman (and Taylor, and many others') view.

Last, standard new Keyensian DSGE models have strong "Fisherian" properties. In response to long lasting or expected interest rate rises, inflation goes up. More on this later.

Ellen McGrattan

Ellen stole the show. (Slides.) Take a break, and watch the video. She manages to be hilarious and incisive. And unlike the rest of us, she didn't try to sheohorn a two hour lecture into her 15 minutes.

Her central points. First, like Harald, she points out that the models are driven by large shocks with less and less plausible structural interpretation, and thus further from the Lucas critique solution than once appeared to be the case. The shocks are really "wedges," deviations from equilibrium conditions of the model with unknown sources

What to do? Focus on rules and institutions. This is a deep point. Even DSGE modelers, in the desire to speak to policy makers, often adopt the static ISLM presumption that policy is about actions, about decisions, whether to raise or lower the funds rate. The other big Lucas point is that we should think about policy in terms of rules and institutions, not just actions.

Monetary policy and ELB

Stephanie Schmitt-Grohé (slides, video)  talked about the Fisherian possibility -- that raising interest rates raises inflation. New-Keynesian DSGE models, with rational expectations, have this property, especially for permanent or preannounced interest rate increases, and when at zero interest rates or otherwise in a passive regime where interest rates do not react more than one for one with inflation. She and Martin Uribe have been advocating this possibility as a serious proposal for Europe and Japan that want to raise inflation.

She presented some nice evidence that permanent increases in interest rates do increase inflation -- and right away, not just in the long run.

Mike Woodford. (slides, video)  gave a dense talk (37 slides, 20 minutes) on policy at the lower bound. During the ELB, central banks moved from interest rates to asset purchases and forward guidance. Mike asks,

To what extent does this mean that the entire conceptual framework of monetary stabilization policy needs to be reconsidered, for a world in which ELB might well continue periodically to bind? 

In classic form, Mike sets the question up as a Ramsey problem. Given a DSGE model, what is the optimal policy, given that interest rates are occasionally constrained? He derives from that problem a price level target. The price level target works, intuitively, by committing the central bank to a period of extra inflation after the zero bound ends. It is a popular form of forward guidance. The innovation here is to derive that formally as an optimal policy problem.

Mike's price level target is stochastic, changing optimally over time to respond to shocks. I'm a little skeptical that the central bank can observe and understand such shocks, especially given the above Uhlig-McGrattan discussion about the nature of shocks. Also, as I emphasize in comments, I'm dubious about the great power of promises of what the central bank will do in the far future to stimulate output today. I'm a fan of price level targets, but on both sides, not just as stimulus, but for utterly different reasons.

Mike takes on rather skeptically the common alternative -- quantitative easing, asset purchases during the time of the bound. He points out that to work, people have to believe that the increase in money is permanent, and won't be quickly withdrawn when the zero bound is over. As evidence, he points to Japan:

Similarly, he likes the price level target over forward guidance -- speeches in place of action -- as it is a more credible commitment to do things ex-post that the bank may not wish to do ex-post.

Finally, he addresses the puzzles of new Keynesian models at the zero bound -- forward guidance has stronger effects the further in the future is the promise; effects get larger as prices get less sticky, and so on. He argues that models should replace rational expectations with a complex k-step iterated expectations rule.

Me.

Video, slides from Sweden, slides from my webpage, written version. I covered this in a previous blog post, so won't repeat it all. I put a lot of effort in to it, and it summarizes a lot of what I've been doing in 15 minutes flat, so I recommend it (of course). It also offers more perspective on above points by Mike and Stephanie. My favorite line, referring to Mike's push for irrational expectations is something close to

"I never thought we would come to Sweden, that I would be defending the basic new-Keynesian program, and that Mike Woodford would be trying to tear it down. Yet here we are. Promote the fiscal equation from the footnotes and you can save the rest." 

Emi Nakamura

Poor Emi had to go last in an exhausting conference of jet-lagged participants. She did a great job (video, slides) covering a century of monetary history and monetary ideas clearly and transparently. These are great slides to use for an undergraduate or MBA class on monetary policy, as well. An abbreviated list:

• Gold standard
• Seasonal variation in interest rates under the gold standard; money demand shocks
• Money demand shocks in the 1980s -- how the supposedly "stable" V in MV=PY fell apart when the Fed pushed on M.
  
  
  
• Theoretical instability / indeterminacy of interest rate targets
• The switch to interest rate targets and corridors in operating procedures
• The (near-miraculous) success of inflation targets
  
• Taylor rules and other theory of determinate inflation under interest rate targets
• How is it "monetary economics" without money?
• Why did immense QE not cause inflation? 

The overarching theme is the grand story of a move, intellectual and practical, from money supply targets (of which gold is one) to interest rate targets.

Postlude

Monday featured two panels, Macroeconomic research and the financial crisis: A critical assessment, with Annette Vissing-Jørgensen, Luigi Zingales, Nancy Stokey, and  Robert Barro ; and Banking and finance research and the financial crisis: A critical assessment with Kristin Forbes, Ricardo Reis, Amir Sufi, and Antoinette Schoar.

Perhaps it's in the nature of panels, but I found these a disappointment, especially compared to the stellar presentations in the main conference. Also I think it would have been better to allow more (any, really) audience questions; the whole conference was a bit disappointing for lack of general discussion, especially with such a stellar group.

In particular, Luigi led by excoriating the profession for not paying attention to housing problems and financial crises. I thought this a bit unfair and simultaneously short-sighted. He singled out monetary economics textbooks, including Mike Woodford's, for omitting financial crises. Well, Mike omitted asteroid impacts too. It isn't a book about financial crises. And, after lamabasting all of us, he said not one word about events since 2009. What are we missing now? I had to stand up and ask that rude question, again suggesting that perhaps we are all not listening to Ken Rogoff this time. Annette went on to ask something like "don't you Chicago people believe in any regulation at all," and the respondents were too polite to say what an unproductive question that is and just move on.

Again, I offer apologies to authors and discussants I didn't get to. The whole thing was memorable, but there is only so much I can blog! Do go to the site and look at the other sessions, according to your interests.

Long run money

Continuing in the Il Sole series on Italy and the Euro, Alberto Bagnai writes that the euro is a "big defeat for the economics profession'' here in English, here in Italian.  He takes particular issue with my earlier case for a common currency, here in English, in Italian, and blog post.

"John Cochrane’s idea that money is irrelevant for growth (economists say that money is “neutral”) not only clashes with major scientific results, such as Dani Rodrik’s analysis of the role of excessively strong exchange rates in slowing the growth of a country, but also with what the European institutions are finally admitting through clenched teeth: the reforms are causing deflation and failing to promote employment in any decisive way (footnote 23 in the above-mentioned ECB Economic bulletin).

The best economists had also addressed this point: the negative consequences of structural reforms on the productivity of labour were illustrated by Robert Gordon in 2008. For Cochrane, money is like oil in a motor. The metaphor is (unwittingly) correct. Bad management of oil has long-period consequences like bad management of currency: in the first case the head fuses and the motor stops; in the second a continent, and the world economy stops.

If De Grauwe is incoherent with data and Cochrane with theories,..."

I have long been accused of being theoretically pure but incoherent about the "real world." (As if the real world could ever conform to no theory, rather than a better theory). This is the first time I, or the proposition of long-run monetary neutrality, have been accused of theoretical incoherence.

Douthat and Feldstein on Euro

In case you missed it, this Sunday featured a creditable effort by the NY Times to look out of the groundhog hole. You have likely followed the explosion resulting from Bret Stephens' first column. Likewise, Ross Douthat tried to explain the attraction of Marine LePen.  I'm not a LePen fan, but appreciated his honest effort to explain how the other side say things.

I was interested in Douthat's views on the euro:

But on the other hand, our era’s “enlightened” governance has produced an out-of-touch eurozone elite lashed to a destructive common currency,..

There is no American equivalent to the epic disaster of the euro, a form of German imperialism with the struggling parts of Europe as its subjects... 

And while many of her economic prescriptions are half-baked, her overarching critique of the euro is correct: Her country and her continent would be better off without it.

Douthat does not pretend to be an economist, and I have no beef with his expressing such views. Because such views are commonplace conventional wisdom from our policy elite. And if the euro falls apart, they will bear a lot of blame for its passing. Be careful what you write, people might be listening.  No, when Germany sends Porsches to Greece in return for worthless pieces of paper, it is not Germany who got the better of the deal. And while you're at it, get rid of that silly common meter, and restore proper nationalism of weights and measures too. (Of course perhaps my admiration for the euro is wrong. Then they will deserve credit for the wave of prosperity that flows over Europe once it unleashes the shackles of the common currency dragging it down. )

As a concrete example, consider  Martin Feldstein writing in the Il Sole series on the Euro, (I don't mean to pick on Feldstein. He has been a consistent anti-euro voice, arguing the great benefits for Italy and Greece of periodic inflation and devaluation. But he is just a good sober example of the common view in Cambridge-centered economic policy circles.)

Long Run Lira?

Luigi Zingales inaugurated a series of essays in Il Sole 24 Ore, an Italian newspaper, on whether Italy should stay in or get out of the Euro, and graciously asked me to contribute. My view, here in English, here in Italian.

To be clear, I kept to Luigi's terms of the debate. This piece is only about whether Italy is better off in the long run, with a common currency. Whether it gets anything out of an exit, a devaluation, a default now is for another day. And this is just about currency, not about leaving the EU, not about debt or austerity, not about whether europe needs a fiscal union, or the rest of it. (Some subsequent correspondence verifies the wisdom, but also the difficulty, of talking about one thing at a time.)

Return to the Lira? A long-run view (Not very good English title)
The euro isn't perfect, but it isn't bad. (Much better Italian title)

Should Italy have her own currency, and run her own monetary policy? For today, let's focus on the long-run question, leaving out for now the transition and any immediate benefits and costs. When contemplating a divorce, it is wise to focus on what life will be like when everything is settled, not just who will have to wash today's stack of dirty dishes.

Remember first that monetary policy cannot substantially improve long-run growth. Long-run growth comes from people and productivity, how much each person can produce per hour of work. In turn, productivity comes from innovation, new companies, new ways doing business, and new products. Like Uber, consumers benefit and existing producers are disrupted. Improvements in long-run growth come only from structural reform, not monetary machination. Money is like oil in a car. Bad monetary policy, like too little oil, can drag an economy down. But after a point more oil will not help you to go faster — you need a bigger engine.

Negative rates and inflation

Have negative interest rates boosted inflation? Here is a nice graph (source macro-man blog, HT FT alphaville)

Source: Macro-man blog

Not really. Explanations? Choose the chicken or the egg:

1) But for negative rates, inflation would have been even lower

2) We're living in a Fisher effect world. Lower rates lower inflation. (Which is arguably a good, if unintended, thing)

Brexit or Fixit

Many commenters compare Brexit to the American revolution. I think the constitutional convention is a better analogy for the moment and challenge ahead. A first attempt at union resulted in an unworkable Federal structure. Europe needs a constitutional convention to fix its union.

The EU's first attempt was basically aristocratic/technocratic. Brussels tells the peasants what to do. The EU  needs a hardy dose of accountability, representation, checks and balances -- all the beautiful structures of the US Constitution. What little thought the EU put in to these matters is clearly wanting.

America did not wait for a state to leave. But, though even the Pope admits the EU structure wasn't working, the EU needed this wake up call. Bring the UK to the convention, and bring them back. Fixit. (#Fixit?)

Greece and Taxes

An interview for the Greek Reporter, in English, perhaps cheering the like-minded and sure to infuriate some conventional wisdom.

I agree with the "anti-austerians" on one point: Raising taxes was a bad idea. In my emphasis what counts are marginal tax rates on growth-producing activities, rather than Keynesian pump-priming, however, which is an important distinction.

The article says "A recently released study by the Economics Department at the National Kapodistrian University of Athens revealed that Greece has the third highest taxation rate among 21 European countries." If anyone has a link, especially if it's in English, send it in the comments.

Taylor Truman Medal Speech

John Taylor's speech  on receiving the Truman medal for economic policy is noteworthy. John thinks about the institutions that govern monetary and financial policy. We spend too much time on the will-she-raise-rates-or-won't-she sort of decisions that we forget how important this institutional structure is to good, predictable and (as John might put it) rule-based policy.

John reflects on the institutions of postwar policy:

Seventy years ago Harry Truman signed the Bretton Woods Agreements Act of 1945. It officially created two new economic institutions: the International Monetary Fund and the World Bank. A year later he signed the Employment Act of 1946. It created two more new institutions: the President’s Council of Economic Advisers (CEA) and the Congress’s Joint Economic Committee (JEC). And in 1947 came the General Agreement on Tariffs and Trade (GATT) and the Truman Doctrine, and in 1948 the Marshall Plan.

Greece and Banking, the oped

Source: Wall Street Journal; Getty Images

A Wall Street Journal Oped with Andy Atkeson, summarizing many points already made on this blog. This was published August 5, so today I'm allowed to post it in its entirety. You've probably seen it already, but this blog is in part an archive. If not, here is the whole thing, with my preferred first paragraph.
Local pdf here.

Greece's Ills [and, more importantly, the Euro's] Require a Banking Fix 

Greece suffered a run on its banks, closing them on June 29. Payments froze and the economy was paralyzed. Greek banks reopened on July 20 with the help of the European Central Bank. But many restrictions, including those on cash withdrawals and international money transfers, remain. The crash in the Greek stock market when it reopened Aug. 3 reminds us that Greece’s economy and financial system are still in awful shape. 

Europa hat die Banken missbraucht

An editorial in Süddeutche Zeitung, on Greece, banks and the Euro, summarizing some recent blog posts.

I don't speak German, so I don't know how the translation went, but it sounds great to me:

Die jüngste Griechenland-Krise rückt das größte Strukturproblem des Euro in den Vordergrund: Unter dem Dach einer gemeinsamen Währung müssen Staaten genauso wie Firmen pleitegehen können. Banken müssen international offen sein, sie dürfen nicht vollgepackt sein mit den Schuldtiteln lokaler Regierungen. So war der Euro ursprünglich konzipiert. Leider haben Europas Politiker die erste Prämisse vergessen und sind zur zweiten gar nicht erst vorgedrungen. Jetzt ist es Zeit, beides in Angriff zu nehmen.... 

The English version:

Greek Lessons for a Healthy Euro

The most recent Greek crisis brings to the foreground the main structural problem of the euro: Under a common currency sovereigns must default just like corporations default. And banks must be open internationally, not stuffed with local governments’ debts.

This is how the euro was initially conceived. Alas, europe’s leaders forgot about the first and never got around to the second. It’s time to fix both.