Before the 1930′s, recessions didn’t exist. This doesn’t mean that the economy behaved all that differently than it does now: up until that time, all economic declines were simply called depressions. But after the Great Depression, the term “recession” was coined to separate financial downturns on a lesser scale from those comparable to the catastrophe of the ’30′s.

The common definition of a recession is a drop in Gross Domestic Product (GDP) over two or more consecutive quarters. But economists tend to dislike this definition because it only looks  at GDP, and the two-quarter minimum means shorter recessions can go unnoticed. The National Bureau of Economic Research officially declares a recession after an in-depth analysis of financial information.

A depression is a recession in which the GDP declines by more than 10%, or one that lasts for more than three years. While recessions are pretty common, depressions are not. Only one developed country, Finland, has suffered a depression since the end of World War II. Depression has become a loaded term since the 1930′s catastrophe, and we want to make sure we use it only when the situation is appropriately grave.