Phillips curve

How is the economy doing this well?

PNRJ critique of neoclassical economics, current events, macroeconomics, politics , , , , , , , , , , , , , ,

Apr 14 JDN 2460416

We are living in a very weird time, economically. The COVID pandemic created huge disruptions throughout our economy, from retail shops closing to shortages in shipping containers. The result was a severe recession with the worst unemployment since the Great Depression.

Now, a few years later, we have fully recovered.

Here’s a graph from FRED showing our unemployment and inflation rates since 1990 [technical note: I’m using the urban CPI; there are a few other inflation measures you could use instead, but they look much the same]:

Inflation fluctuates pretty quickly, while unemployment moves much slower.

There are a lot of things we can learn from this graph:

  1. Before COVID, we had pretty low inflation; from 1990 to 2019, inflation averaged about 2.4%, just over the Fed’s 2% target.
  2. Before COVID, we had moderate to high unemployment; it rarely went below 5% and and for several years after the 2008 crash it was over 7%—which is why we called it the Great Recession.
  3. The only times we actually had negative inflation—deflation—were during recessions, and coincided with high unemployment; so, no, we really don’t want prices to come down.
  4. During COVID, we had a massive spike in unemployment up to almost 15%, but then it came back down much more rapidly than it had in the Great Recession.
  5. After COVID, there was a surge in inflation, peaking at almost 10%.
  6. That inflation surge was short-lived; by the end of 2022 inflation was back down to 4%.
  7. Unemployment now stands at 3.8% while inflation is at 2.7%.

What I really want to emphasize right now is point 7, so let me repeat it:

Unemployment now stands at 3.8% while inflation is at 2.7%.

Yes, technically, 2.7% is above our inflation target. But honestly, I’m not sure it should be. I don’t see any particular reason to think that 2% is optimal, and based on what we’ve learned from the Great Recession, I actually think 3% or even 4% would be perfectly reasonable inflation targets. No, we don’t want to be going into double-digits (and we certainly don’t want true hyperinflation); but 4% inflation really isn’t a disaster, and we should stop treating it like it is.

2.7% inflation is actually pretty close to the 2.4% inflation we’d been averaging from 1990 to 2019. So I think it’s fair to say that inflation is back to normal.

But the really wild thing is that unemployment isn’t back to normal: It’s much better than that.

To get some more perspective on this, let’s extend our graph backward all the way to 1950:

Inflation has been much higher than it is now. In the late 1970s, it was consistently as high as it got during the post-COVID surge. But it has never been substantially lower than it is now; a little above the 2% target really seems to be what stable, normal inflation looks like in the United States.

On the other hand, unemployment is almost never this low. It was for a few years in the early 1950s and the late 1960s; but otherwise, it has always been higher—and sometimes much higher. It did not dip below 5% for the entire period from 1971 to 1994.

They hammer into us in our intro macroeconomics courses the Phillips Curve, which supposedly says that unemployment is inversely related to inflation, so that it’s impossible to have both low inflation and low unemployment.

But we’re looking at it, right now. It’s here, right in front of us. What wasn’t supposed to be possible has now been achieved. E pur si muove.

There was supposed to be this terrible trade-off between inflation and unemployment, leaving our government with the stark dilemma of either letting prices surge or letting millions remain out of work. I had always been on the “inflation” side: I thought that rising prices were far less of a problem than poeple out of work.

But we just learned that the entire premise was wrong.

You can have both. You don’t have to choose.

Right here, right now, we have both. All we need to do is keep doing whatever we’re doing.

One response might be: what if we can’t? What if this is unsustainable? (Then again, conservatives never seemed terribly concerned about sustainability before….)

It’s worth considering. One thing that doesn’t look so great now is the federal deficit. It got extremely high during COVID, and it’s still pretty high now. But as a proportion of GDP, it isn’t anywhere near as high as it was during WW2, and we certainly made it through that all right:

So, yeah, we should probably see if we can bring the budget back to balanced—probably by raising taxes. But this isn’t an urgent problem. We have time to sort it out. 15% unemployment was an urgent problem—and we fixed it.

In fact in some ways the economy is even doing better now than it looks. Unemployment for Black people has never been this low, since we’ve been keeping track of it:

Black people had basically learned to live with 8% or 9% unemployment as if it were normal; but now, for the first time ever—ever—their unemployment rate is down to only 5%.

This isn’t because people are dropping out of the labor force. Broad unemployment, which includes people marginally attached to the labor force, people employed part-time not by choice, and people who gave up looking for work, is also at historic lows, despite surging to almost 23% during COVID:

In fact, overall employment among people 25-54 years old (considered “prime age”—old enough to not be students, young enough to not be retired) is nearly the highest it has ever been, and radically higher than it was before the 1980s (because women entered the workforce):

So this is not an illusion: More Americans really are working now. And employment has become more inclusive of women and minorities.

I really don’t understand why President Biden isn’t more popular. Biden inherited the worst unemployment since the Great Depression, and turned it around into an economic situation so good that most economists thought it was impossible. A 39% approval rating does not seem consistent with that kind of staggering economic improvement.

And yes, there are a lot of other factors involved aside from the President; but for once I think he really does deserve a lot of the credit here. Programs he enacted to respond to COVID brought us back to work quicker than many thought possible. Then, the Inflation Reduction Act made historic progress at fighting climate change—and also, lo and behold, reduced inflation.

He’s not a particularly charismatic figure. He is getting pretty old for this job (or any job, really). But Biden’s economic policy has been amazing, and deserves more credit for that.

What does a central bank actually do?

PNRJ macroeconomics, public policy , , , , , , , , , , ,

Aug 26 JDN 2458357

Though central banks are a cornerstone of the modern financial system, I don’t think most people have a clear understanding of how they actually function. (I think this may be by design; there are many ways we could make central banking more transparent, but policymakers seem reluctant to show their hand.)

I’ve even seen famous economists make really severe errors in their understanding of monetary policy, as John Taylor did when he characterized low-interest-rate policy as a “price ceiling”.

Central banks “print money” and “set interest rates”. But how exactly do they do these things, and what on Earth do they have to do with each other?

The first thing to understand is that most central banks don’t actually print money. In the US, cash is actually printed by the Department of the Treasury. But cash is only a small part of the money in circulation. The monetary base consists of cash in vaults and in circulation; the US monetary base is about $3.6 trillion. The money supply can be measured a few different ways, but the standard way is to include checking accounts, traveler’s checks, savings accounts, money market accounts, short-term certified deposits, and basically anything that can be easily withdrawn and spent as money. This is called the M2 money supply, and in the US it is currently over $14.1 trillion. That means that only 25% of our money supply is in actual, physical cash—the rest is all digital. This is actually a relatively high proportion for actual cash, as the monetary base was greatly increased in response to the Great Recession. When we say that the Fed “prints money”, what we really mean is that they are increasing the money supply—but typically they do so in a way that involves little if any actual printing of cash.

The second thing to understand is that central banks don’t exactly set interest rates either. They target interest rates. What’s the difference, you ask?

Well, setting interest rates would mean that they made a law or something saying you have to charge exactly 2.7%, and you get fined or something if you don’t do that.

Targeting interest rates is a subtler art. The Federal Reserve decides what interest rates they want banks to charge, and then they engage in what are called open-market operations to try to make that happen. Banks hold reserves—money that they are required to keep as collateral for their loans. Since we are in a fractional-reserve system, they are allowed to keep only a certain proportion (usually about 10%). In open-market operations, the Fed buys and sells assets (usually US Treasury bonds) in order to either increase or decrease the amount of reserves available to banks, to try to get them to lend to each other at the targeted interest rates.

Why not simply set the interest rate by law? Because then it wouldn’t be the market-clearing interest rate. There would be shortages or gluts of assets.

It might be easier to grasp this if we step away from money for a moment and just think about the market for some other good, like televisions.

Suppose that the government wants to set the price of a television in the market to a particular value, say $500. (Why? Who knows. Let’s just run with it for a minute.)

If they simply declared by law that the price of a television must be $500, here’s what would happen: Either that would be too low, in which case there would be a shortage of televisions as demand exceeded supply; or that would be too high, in which case there would be a glut of televisions as supply exceeded demand. Only if they got spectacularly lucky and the market price already was $500 per television would they not have to worry about such things (and then, why bother?).

But suppose the government had the power to create and destroy televisions virtually at will with minimal cost.
Now, they have a better way; they can target the price of a television, and buy and sell televisions as needed to bring the market price to that target. If the price is too low, the government can buy and destroy a lot of televisions, to bring the price up. If the price is too high, the government can make and sell a lot of televisions, to bring the price down.

Now, let’s go back to money. This power to create and destroy at will is hard to believe for televisions, but absolutely true for money. The government can create and destroy almost any amount of money at will—they are limited only by the very inflation and deflation the central bank is trying to affect.

This allows central banks to intervene in the market without creating shortages or gluts; even though they are effectively controlling the interest rate, they are doing so in a way that avoids having a lot of banks wanting to take loans they can’t get or wanting to give loans they can’t find anyone to take.

The goal of all this manipulation is ultimately to reduce inflation and unemployment. Unfortunately it’s basically impossible to eliminate both simultaneously; the Phillips curve describes the relationship generally found that decreased inflation usually comes with increased unemployment and vice-versa. But the basic idea is that we set reasonable targets for each (usually about 2% inflation and 5% unemployment; frankly I’d prefer we swap the two, which was more or less what we did in the 1950s), and then if inflation is too high we raise interest rate targets, while if unemployment is too high we lower interest rate targets.

What if they’re both too high? Then we’re in trouble. This has happened; it is called stagflation. The money supply isn’t the other thing affecting inflation and unemployment, and sometimes we get hit with a bad shock that makes both of them high at once. In that situation, there isn’t much that monetary policy can do; we need to find other solutions.

But how does targeting interest rates lead to inflation? To be quite honest, we don’t actually know.

The basic idea is that lower interest rates should lead to more borrowing, which leads to more spending, which leads to more inflation. But beyond that, we don’t actually understand how interest rates translate into prices—this is the so-called transmission mechanism, which remains an unsolved problem in macroeconomics. Based on the empirical data, I lean toward the view that the mechanism is primarily via housing prices; lower interest rates lead to more mortgages, which raises the price of real estate, which raises the price of everything else. This also makes sense theoretically, as real estate consists of large, illiquid assets for which the long-term interest rate is very important. Your decision to buy an apple or even a television is probably not greatly affected by interest rates—but your decision to buy a house surely is.

If that is indeed the case, it’s worth thinking about whether this is really the right way to intervene on inflation and unemployment. High housing prices are an international crisis; maybe we need to be looking at ways to decrease unemployment without affecting housing prices. But that is a tale for another time.