Economic growth

Stagflation: A Primer

The term stagflation came into common use in the mid-1970s, when many advanced economies experienced higher inflation and slower growth than they had in the 1960s. At the time, the joint behavior of inflation and economic growth confused many economists. Throughout the 1950s and 1960s, growth and inflation generally moved in the same direction. Most important, inflation tended to fall during recessions and to rise in booms. Stagflation meant that these two key summary measures of macroeconomic performance moved in opposite directions. What caused this dramatic, painful, and persistent shift?

To understand the sources of stagflation in the 1970s—and how we subsequently avoided a repeat of that episode (at least so far)—we start with the simple premise that there are two types of disturbances hitting the economy: demand and supply. The first, changes in demand, moves inflation and growth in the same direction. The broad array of things that shift demand include fluctuations in consumer or business confidence, shifts in government tax and expenditure policy, and variation in the appeal of imports to domestic residents or of exports to foreigners. When any of these goes up or down, inflation and output rise and fall together.

Supply disturbances—which alter the cost of production—are fundamentally different. These stagflationary shocks move growth and inflation in opposite directions. For example, an adverse supply shock that raises the cost of production at least temporarily drives inflation up and growth down.

Importantly, these cost shocks cannot be the whole story behind a decade-long surge of inflation. Whether the consequences of a cost shock are one-off adjustments in the price level or an increase of the trend of inflation depends on the monetary policy response. Put differently, monetary policy determines whether we experience stagflation over any longer interval….

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COVID-19 Economic Downturn: What do cyclical norms suggest?

Business cycle downturns come in many forms. Some are big, others small. Some are long, others short. Some result from policy errors or euphoric booms, while others are the consequence of external events.

Nevertheless, downturns have some common features and regularities. Among those that have been reasonably stable over much of the past half century are the relationships among unemployment, activity and federal budget deficits. Using these, we explore the impact of the U.S. COVID-19 economic downturn that began last month.

To sum up, recent labor market developments already make clear that we are in the midst of the deepest recession since the 1930s. In fact, the coordinated shutdown of a large swath of the American economy has made this plunge more rapid than that of the Depression. Whether we are at the start of a second Depression depends greatly on how long we keep the economy in a state of suspended animation.

If the lockdown extends from weeks to months, the short-term pain will turn into long-term scarring. The longer it takes to reopen businesses safely, the more damage we will do to the many linkages and networks (including lender-borrower, supplier-user and employer-employee relationships) that make up the fabric of the economy. As the wave of bankruptcies grows, damage to the financial system will increase, as will the resulting harm to the economy’s productive capacity….

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Illuminating GDP

Satellites are great. It is hard to imagine living without them. GPS navigation is just the tip of the iceberg. Taking advantage of the immense amounts of information collected over decades, scientists have been using satellite imagery to study a broad array of questions, ranging from agricultural land use to the impact of climate change to the geographic constraints on cities (see here for a recent survey).

One of the most well-known economic applications of satellite imagery is to use night-time illumination to enhance the accuracy of various reported measures of economic activity. For example, national statisticians in countries with poor information collection systems can employ information from satellites to improve the quality of their nationwide economic data (see here). Even where governments have relatively high-quality statistics at a national level, it remains difficult and costly to determine local or regional levels of activity. For example, while production may occur in one jurisdiction, the income generated may be reported in another. At a sufficiently high resolution, satellite tracking of night-time light emissions can help address this question (see here).

But satellite imagery is not just an additional source of information on economic activity, it is also a neutral one that is less prone to manipulation than standard accounting data. This makes it is possible to use information on night-time light to monitor the accuracy of official statistics. And, as we suggest later, the willingness of observers to apply a “satellite correction” could nudge countries to improve their own data reporting systems in line with recognized international standards….

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Are we overestimating inflation (again?)

Twenty years ago, a group of experts – the “Boskin Commission” – concluded that the U.S. consumer price index (CPI) systematically overstated inflation by 0.8 to 1.6 percentage points each year. Taking these findings to heart, the Bureau of Labor Statistics (BLS) got to work reducing this bias, so that by the mid-2000s, experts felt it had fallen by as much as half a percentage point.

We bring this up because there is a concern that as a consequence of the way in which we measure information technology (IT), health care, digital content and the like, the degree to which conventional indices overestimate inflation may have risen...

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Growth and dynamism: troubling facts

When the U.S. economy was booming in the 1990s, new firms flourished and willing workers found jobs quickly. In the current decade, these patterns faded. Startup and job finding rates have slowed so that employment has only just surpassed its 2007 peak. While part of current U.S. frailty remains cyclical, these trends suggest a worrying loss of economic dynamism...

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