Mankiw’s Tenth Principle: Society Faces A Short-Run Trade-off Between Inflation and Unemployment

The introduction to this series is here.
Part 1 is here.
Part 2 is here.
Part 3 is here.
Part 4 is here.
Part 5 is here.
Part 6 is here.
Part 7 is here.
Part 8 is here.
Part 9 is here.

Mankiw’s tenth principle of economics is: Society faces a short-run trade-off between inflation and unemployment. He admits that this is more controversial among economists than his other principles. He says that most believe this explanation:

  • Increasing the amount of money in the economy stimulates the overall level of spending and thus the demand for goods and services.
  • Higher demand may over time cause firms to raise their prices, but in the meantime, it also encourages them to hire more workers and produce a larger quantity of goods and services.
  • More hiring means lower unemployment.

This line of reasoning leads to one final economy-wide trade-off: a short-run trade-off between inflation and unemployment.

This gives economic policy-makers a tool for influencing economic trends. “By changing the amount of money it prints”, says Mankiw, government can put more or less money into the economy, and thus influence unemployment, at least in the short run. The Great Crash of 2008 is an example. Mankiw explains that it was caused by “bad bets on the housing market”, and led to high unemployment and lower incomes. The Obama administration responded with a stimulus package of spending and tax cuts, and the Fed increased the amount of money in the economy, in an effort to reduce unemployment. He adds: “Some feared, however, that these policies might over time lead to an excessive level of inflation.”

The frightened people were, of course, proven absolutely wrong, though they won the policy argument with the imposition of the Sequester. The stimulus package was too small, though at least it more or less happened, and of course spending on the military increased, which helped, though it would have been nice to have something for the money besides the worthless F-35. This discussion is fleshed out beginning at about page 490 (in the 6th Ed.) with a long discussion of the Phillips Curve. This Wikipedia entry is at least cheaper than buying Mankiw’s book. for those not familiar with the subject.

This isn’t so much a principle in the sense of an axiom as it is a theorem, worked up from axioms. The source of the idea is a 1958 paper by William Phillips, showing an historical correlation between inflation and unemployment in the UK, and extended to US data by Paul Samuelson and Robert Solow. The correlation and the explanation worked together to persuade people that both the grounds of explanation and the relationship were more or less permanent features of the economy. The ideas behind the explanation are neoclassical, so the correlation served to validate those neoclassical ideas.

Recently the Wall Street Journal published an essay by Ben Leubsdorf discussing the current understanding of the Phillips Curve debate: The Fed Has a Theory. Trouble Is, the Proof Is Patchy. [Paywall]. Jared Bernstein discusses it in this post and links to this New York Times post; both are worth reading to see just how unhinged we are from the simple explanation offered by Mankiw. This chart is from the WSJ article.

Phillips Curve Chart 3

To read the chart, select an expansion, find the line in that color, and look for the circle, which is the beginning of the period. Then follow the line as it moves showing the changes in inflation (y-axis) and unemployment (x-axis). Here’s Leubsdorf’s explanation:

But the simple link between U.S. unemployment and inflation described by the Phillips curve appeared to break down after the 1960s. High inflation coexisted with high unemployment in the 1970s. In the 1990s, the jobless rate fell as price pressures weakened. Over the past three years, inflation has declined despite a falling jobless rate.

Mankiw says there is dispute among economists about this, and Leubsdorf confirms that. He says that a recent WSJ survey found that 2/3 of economists “believed that the link exists.” Here’s a quote from a believer, Atlanta Fed President Dennis Lockhart.

“In the absence of direct evidence that inflation is in fact converging to the target and in the absence of compelling or convincing direct evidence, I think a policy maker has to act on the view that the basic relationship in the Phillips curve between inflation and employment will assert itself in a reasonable period of time as the economy tightens up ….

Economists are fully aware of the problems with the Phillips Curve, and there are plenty of attempts to make it better. This is from the conclusion of an April 2015 Working Paper by Laurence Ball and Sandeep Mazumder of the International Fund:

One of Mankiw’s (2014) ten principles of economics is, “Society faces a short-run tradeoff between inflation and unemployment.” This tradeoff, the Phillips curve, is critically important for monetary policy and for forecasting inflation. It would be extraordinarily useful to discover a specification of the Phillips curve that fits the data reliably. Unfortunately, researchers have repeatedly needed to modify the Phillips curve to fit new data. Friedman added expected inflation to the Samuelson-Solow specification.

Subsequent authors have added supply shocks (Gordon, 1982), time-variation in the Phillips-curve slope(Ball et al., 1988), and time-variation in the natural rate of unemployment (Staiger et al.,1997). Each modification helped explain past data, but, as Stock and Watson (2010) observe, the history of the Phillips curve “is one of apparently stable relationships falling apart upon publication.” Ball and Mazumder (2011) is a poignant example.

Even today people are looking for a way to find something useful in past data to predict future outcomes. As Leubsdorf noted, the Fed is using some version of this curve in deciding when to raise interest rates.

So, how does this fit with neoliberalism? One of the goals of neoliberal economics is the protection of established wealth. Inflation erodes wealth. Returns to capital may or may not keep up with inflation, depending on the strength of labor and other factors of production. Debtors are able to repay their debt in less valuable dollars, which erodes the assets of creditors. If the increased returns are less than the erosion, wealth suffers. As we have seen in the wake of the Great Crash, the governing power structure of neoliberalism demands that capital be protected whether in the form of equity or debt. This principle tells policy makers to put people out of work rather than suffer inflation.

The Fed follows this principle. This is a chart of the labor share of income.
labor share 1
The gray vertical bars are recessions. The chart shows that as the labor share rises, we get a recession. The following chart shows bank prime rates.
Bank Prime Rate
As interest rates rise, we get recessions. With the exception of the recession that followed the Great Crash, it’s fair to say that all of these recessions were engineered by the Fed because of inflation or fear of inflation.

The implications are fascinating. Before the Great Crash, almost all US money was created by bank lending and credit expansion. Mankiw’s Principle No. 9 tells us that when too much money is created, we get inflation. The Phillips Curve tells the Fed it has to raise interest rates to stem inflation, and that it does so at the cost of putting people out of jobs. So, businesses lend and borrow too much, creating inflation or fear of inflation, and to solve the problem created by the failure of capitalists, the Fed makes sure only the working people pay the price, by losing their livelihoods, and lately, by watching their incomes stagnate or drop. And that is the outcome of applying Mankiw’s Principles of Economics: damaging workers to protect the rich.

Notre Dame undergrad (math); JD, Indiana University at Bloomington; 1st Lieutenant, US Army.; private practice in corporate and securities law; Assistant AG in Tennessee for consumer protection and securities; Blue Sky Securities Commissioner, Tennessee; private practice, bankruptcy and corporate law.

I have had a lifelong interest in economics. For most of my career, that interest was practical, focused on the problems in front of me. Lately I have been more interested in economics as a theory, especially its impact on the lives of people like those I met in my bankruptcy practice, and on the politics of money in the US. I also enjoy reading philosophers, starting in college and steadily expanding my reading ever since. I wrote at FireDogLake for a number of years.

Generally, I think the problem facing the US is the dominance of neoliberal discourse. I think it clouds the vision, and limits the kinds of problems that can be identified and solved. For example, the existence and danger of climate change can easily be identified in a scientific discussion. However, the problem does not fit the neoliberal discourse because science insists that the pursuit of individual and corporate self-interest will lead to devastation. In neoliberal discourse, the pursuit of self-interest always leads to Eden.

The neoliberal project has two prongs. One is the police function of crushing dissent and alternative views. The police function is provided by government agencies and private and institutional actors. The counterpart is the economic system , which is operated by government and by private and institutional actors. Some of these actors operate in both spheres. I focus on the second prong.

Rick Scott Continues Struggle to Look Human, Endorses Medicaid Expansion While Infuriating Tea Party

Scott's attempts to look human are hampered by his striking resemblance to Voldemort.

Scott’s attempts to look human are hampered by his striking resemblance to Voldemort.

Rick Scott was elected Governor of Florida in 2010 by a razor-thin margin that many attribute to his strong support from the Tea Party movement. A large portion of that support was garnered through his highly public opposition to President Obama’s Affordable Care Act. However, with the small exception of my Congressional district electing batshit crazy Tea Partier Ted Yoho in 2012, it appears that the Tea Party is on a bit of a retreat in Florida and so, with Charlie Crist now looking like a very formidable opponent for the 2014 gubernatorial race, Scott is systematically reversing his position on a number of issues away from the crazy and toward both the human and the humane.

A huge step in Scott’s attempted move back toward humanity took place early yesterday evening, as he announced his support for Florida participating in expansion of Medicaid under the ACA. He even resorted to the death of his mother to justify the move:

The governor said he gained new perspective after his mother’s death last year, calling his decision to support a key provision of the Affordable Care Act a “compassionate, common sense step forward,” and not a “white flag of surrender to government-run healthcare.”

However, the representatives of Professional Crazy were not amused by this development. From the same AP article:

“I am flabbergasted. This is a guy who, before he was a candidate for governor, started an organization to fight ‘Obamacare’ in the expansion of medical entitlements. This is a guy who said it will never happen on his watch. Well, here it is,” said Slade O’Brien, Florida director of the conservative group Americans for Prosperity.

In other words, AFP notes that Scott was just one more of their huge investments that produced very poor returns.

And McClatchy brings us the Tea Party response, thankfully translated from the original jibberish:

“This is just another example of Republicans lying to Floridians,” said Everett Wilkinson of Palm Beach Gardens, calling Scott “the Benedict Arnold to the patriot and tea party movement in Florida.”

Of course, Florida’s Grifter in Chief (who still holds the record for the largest federal fine paid by a company for Medicare fraud) wouldn’t make this move if he couldn’t further enrich his old HCA co-conspirators or other corporate fraudsters, and so he has engineered a new opportunity. From the AP article: Read more

Many years ago, Jim got a BA in Radiation Biophysics from the University of Kansas. He then got a PhD in Molecular Biology from UCLA and did postdoctoral research in yeast genetics at UC Berkeley and mouse retroviruses at Stanford. He joined biosys in Palo Alto, producing insect parasitic nematodes for pest control. In the early 1990’s, he moved to Gainesville, FL and founded a company that eventually became Entomos. He left the firm as it reorganized into Pasteuria Biosciences and chose not to found a new firm due a clash of values with venture capital investors, who generally lack all values. Upon leaving, he chose to be a stay at home dad, gentleman farmer, cook and horse wrangler. He discovered the online world through commenting at Glenn Greenwald’s blog in the Salon days and was involved in the briefly successful Chris Dodd move to block the bill to renew FISA. He then went on to blog at Firedoglake and served a brief stint as evening editor there. When the Emptywheel blog moved out of Firedoglake back to standalone status, Jim tagged along and blogged on anthrax, viruses, John Galt, Pakistan and Afghanistan. He is now a mostly lapsed blogger looking for a work-around to the depressing realization that pointing out the details of government malfeasance and elite immunity has approximately zero effect.

One Percent of All Americans Will Have Lost Unemployment by Month’s End

More than one percent of all Americans–3.3 million people–will have lost their unemployment benefits by month’s end if Congress doesn’t pass an extension of long-term benefits.

The Labor Department estimates that about 1.7 million have lost benefits as of last week, after extended unemployment insurance expired in late May. Those numbers could reach 3.3 million by the end of the month if Congress doesn’t pass an extension after it returns from recess next week.


A bigger concern is the number of people who may lose benefits this month. The tally of people continuing to claim benefits plunged to 4.4 million, the department said. But that doesn’t include an additional 4.6 million people who received extended benefits paid for by the federal government in the week that ended June 19. That’s the latest period for which data are available.

Diane Swonk, chief economist at Mesirow Financial, said many people losing extended unemployment may seek aid through Social Security, food stamps and welfare.

Other economists noted that the end of extended benefits could cut Americans’ incomes by as much as $41 billion, potentially reducing consumer spending in the coming months.

Think about that for a minute. More than one out of every hundred people has been unemployed for so long the Republicans and deficit hawks in Congress think they’re just slacking and should be cut off. Of course, those one out of every hundred people aren’t evenly distributed throughout the population: the less educated, people of color, and people over 50 are suffering disproportionately during this recession.

Nevertheless, they represent a huge chunk of our neighbors, our customers, our family members. And our country seems to have decided they and those who depend on them are expendable.

Marcy has been blogging full time since 2007. She’s known for her live-blogging of the Scooter Libby trial, her discovery of the number of times Khalid Sheikh Mohammed was waterboarded, and generally for her weedy analysis of document dumps.

Marcy Wheeler is an independent journalist writing about national security and civil liberties. She writes as emptywheel at her eponymous blog, publishes at outlets including the Guardian, Salon, and the Progressive, and appears frequently on television and radio. She is the author of Anatomy of Deceit, a primer on the CIA leak investigation, and liveblogged the Scooter Libby trial.

Marcy has a PhD from the University of Michigan, where she researched the “feuilleton,” a short conversational newspaper form that has proven important in times of heightened censorship. Before and after her time in academics, Marcy provided documentation consulting for corporations in the auto, tech, and energy industries. She lives with her spouse and dog in Grand Rapids, MI.