Recession (economics)
Definition
In economics usage, the term recession is conventionally defined (except in official pronouncements by the United States government) as two consecutive quarters of negative growth of gross domestic product. In the United States, the official designation of an economic situation as a recession is the responsibility of the National Bureau of Economic Research [1]. The term "depression" is normally reserved reference to an exceptionally prolonged and severe recession.
The nature of recessions
The causation of recessions is a topic of continuing controversy among economists, and is at the heart of the study of macroeconomics, but there is general agreement concerning some of their common characteristics. By common consent they are triggered by an economic shock to which the market mechanisms, that normally keep supply in line with demand, are temporarily unable to adjust. The result is a deficiency of demand, meaning that suppliers are unable to sell their output - and that, in particular, many people find themselves unable to get employment. Typical of shocks that have triggered recessions have been , the bursting of speculative bubbles, sudden increases of commodity prices, and credit shortages resulting from financial crises.