The IMF had said the world economy was in a “fragile conjuncture.”

Economists are good at measuring the past but inconsistent at forecasting future events, particularly recessions. That’s because recessions aren’t caused merely by concrete changes in the markets. Beliefs and stories passed on by thousands of individuals are important factors, may be even the main ones, in determining big shifts in the economy.

That is likely to be the case again, whenever we next endure a global recession. Worries that a big downturn might be imminent seem to have abated, but they still abound. In April, for example, the International Monetary Fund reported in its World Economic Outlook that while very modest growth is likely this year, the world economy was in a “fragile conjuncture.”

It is therefore worth asking what actually sets off a real global recession. Most discussions focus on leading indicators — statistics about economic variables that have preceded recessions. While these kinds of correlations can sometimes be useful in forecasting, they provide little understanding of why major changes are taking place. Leading indicators don’t usually address ultimate causes, nor do econometric models that try to predict events.

In fact, it’s instructive to remember that global recessions have usually begun suddenly and been a real surprise to most people. Such events can largely be ascribed ultimately to contagious stories of wide significance. Basically, global recessions tend to begin when newly popular narratives reduce individuals’ motivation to spend money. Psychology matters a great deal.
Biggest recession

The biggest recession of all, the Great Depression, began suddenly with the stock market crash of October 1929, as Christina Romer, former chairwoman of President Barack Obama’s Council of Economic Advisers, pointed out in a famous paper. Even before 1929 was over, she found, department store sales and automobile registrations had declined, indicating that consumer spending had already dropped sharply. But why?

Economists were alarmed by the crash, she found, and their warnings helped make consumers wary. But let’s not overestimate the importance of these economic forecasts: Most people never actually read them. They received their information from other channels.

Back then, immediately after the market crash, church sermons were a powerful influence. Congregations were told that many businesspeople had behaved like gamblers and hucksters. Through these sermons and other word-of-mouth sources, moralising about the stock market crash spread, affecting mass psychology.

Frederick Lewis Allen, in the epilogue to his 1931 best-seller “Only Yesterday: An Informal History of the 1920s,” wrote that cultural values changed after the crash: People began to dress more modestly, adopting a new formality and religiosity, reviving Victorian sexual taboos. It is reasonable to assume that many of these changes had an economic impact, mainly by discouraging spending.

Similarly, in more recent downturns, broad cultural and social changes had big effects, too. Since World War II, there have been four global recessions, according to the International Monetary Fund, which defines such an event very specifically as negative global per capita economic growth over at least one year. In each case, these recessions lasted only one year, although relatively slow economic growth rates were also an issue in periods surrounding them. The recessions ended in 1975, 1982, 1991 and 2009.
Concrete casues

As they had with the Great Depression, economists have cited concrete causes for these events. Oil has been named as a fundamental factor in each case, with price spikes blamed on the Yom Kippur war of 1973, the Iran-Iraq War beginning in 1980, the 1990-91 Persian Gulf war and rising energy demand in China and other emerging countries in 2008. Broader social narratives are sometimes ignored, but they matter, too. Consider the recession of 1975. Along with oil prices, common ways of understanding and describing daily life also changed. The oil crisis was widely said to signal the end of an era of abundance.

Lower highway speed limits were imposed to conserve fuel, and cars grew smaller. Americans were told to lower their home thermostats to 68 degrees. In large numbers, people began wearing sweatsuits, flannel leg warmers, thermal underwear and long johns.

Among all this austerity, economist E.F. Schumacher’s 1973 best-seller “Small Is Beautiful” became a global morality lesson. — New York Times News Service

The author is Sterling Professor of Economics at Yale
 
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