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The importance of the term 'effective demand' to Keynesian Economics in general is shown in the fourth paragraph of the chapter, where he states that this concept of effective demand, i.e. the intersection of the supply and demand functions, is the "substance of the General Theory" and says that "the succeeding chapters will be largely occupied ...
Keynesian economics (/ ... As a consequence of the principle of effective demand, which asserts that aggregate demand must equal total income (Chapter 3).
The theoretical system we have described is developed over chapters 4–18, and is anticipated by a chapter which interprets Keynesian unemployment in terms of 'aggregate demand'. The aggregate supply Z is the total value of output when N workers are employed, written functionally as φ(N).
In economics, effective demand (ED) in a market is the demand for a product or service which occurs when purchasers are constrained in a different market. It contrasts with notional demand , which is the demand that occurs when purchasers are not constrained in any other market.
Supply creates its own demand" is a formulation of Say's law. The rejection of this doctrine is a central component of The General Theory of Employment, Interest and Money (1936) and a central tenet of Keynesian economics. See Principle of effective demand, which is an affirmative form of the negation of Say's law.
Pages in category "Keynesian economics" The following 79 pages are in this category, out of 79 total. ... Principle of effective demand; R. Rehn–Meidner model;
Keynesian economists argue that the failure of Say's law, through an increased demand for monetary holdings, can result in a general glut due to falling demand for goods and services. Many economists today maintain that supply does not create its own demand, but instead, especially during recessions, demand creates its own supply. Krugman writes:
Keynesian principles fared increasingly poorly on the practical side of economics – by 1979 they had been ... Effective demand – Demand in a constrained ...