Redefining Recession

There has been a nasty outbreak of R-worditis. Newspapers are full of stories about which of the big economies will be first to dip into recession as a result of the credit crunch. The answer depends largely on what you mean by “recession”. Most economists assume that it implies a fall in real GDP. But this has created a lot of confusion: the standard definition of recession needs rethinking.

In the second quarter of this year, America’s GDP rose at a surprisingly robust annualised rate of 3.3%, while output in the euro area and Japan fell, and Britain’s was flat. Many economists reckon that both Japan and the euro area could see a second quarter of decline in the three months to September. This, according to a widely used rule of thumb, would put them in recession, a fate which America has so far avoided. But on measures other than GDP, America has been the economic laggard over the past year.

The chart looks at several different ways to judge the severity of the economic slowdown since the start of the credit crunch in August 2007. On GDP growth, America has outperformed Europe and Japan. Unemployment, however, tells a very different tale. America’s jobless rate hit 6.1% in August, up from 4.7% a year earlier, and within spitting distance of its peak of 6.3% during the previous recession after the dotcom bust. Other countries have so far published figures only for July, but their jobless rates have barely moved over the past year: Japan’s has risen by only 0.2%, the euro area’s has fallen slightly (though in absolute terms it is still a bit higher than America’s). Another yardstick, GDP per head, takes account of the fact that America’s population is rising rapidly, whereas Japan’s has started to shrink. Since the third quarter of 2007 America’s average income per person has barely increased; Japan’s has enjoyed the biggest gain.

To the average person, a large rise in unemployment means a recession. By contrast, the economists’ rule that a recession is defined by two consecutive quarters of falling GDP is silly. If an economy grows by 2% in one quarter and then contracts by 0.5% in each of the next two quarters, it is deemed to be in recession. But if GDP contracts by 2% in one quarter, rises by 0.5% in the next, then falls by 2% in the third, it escapes,...