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Pigou effect
In economics, the Pigou effect is the stimulation of output and employment caused by increasing consumption due to a rise in real balances of wealth, particularly during deflation. The term was named after Arthur Cecil Pigou by Don Patinkin in 1948.
Real wealth was defined by Arthur Cecil Pigou as the sum of the money supply and government bonds divided by the price level. He argued that Keynes' ''General Theory'' was deficient in not specifying a link from "real balances" to current consumption and that the inclusion of such a "wealth effect" would make the economy more 'self correcting' to drops in aggregate demand than Keynes predicted. Because the effect derives from changes to the "Real Balance", this critique of Keynesianism is also called the Real Balance effect.
== History ==
The Pigou effect was first popularised by Arthur Cecil Pigou in 1943, in ''The Classical Stationary State'' an article in the ''Economic Journal''. He had proposed the link from balances to consumption earlier, and Gottfried Haberler had made a similar objection the year after the ''General Theorys publication.〔()〕
Following the tradition of classical economics, Pigou favoured the idea of "natural rates" to which the economy would return in most cases, although he acknowledged that sticky prices might still prevent reversion to natural output levels after a demand shock. Pigou saw the "Real Balance" effect as a mechanism to fuse Keynesian and classical models.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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