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In the simplest exposition of Keynesian theory, the economy is assumed to be closed (which implies that NX = 0), and planned investment is exogenous and determined by the animal spirits of investors. Consumption is an affine function of income, C = a + bY where the slope coefficient b is called the marginal propensity to consume .
This model was developed by Paul Samuelson, who credited Alvin Hansen for the inspiration. [ 1 ] [ 2 ] [ 3 ] This model is based on the Keynesian multiplier , which is a consequence of assuming that consumption intentions depend on the level of economic activity, and the accelerator theory of investment , which assumes that investment ...
Although Keynesian theory originally omitted an explanation of price levels and inflation, later Keynesians adopted the Phillips curve to model price-level changes. Some Keynesians opposed the synthesis method of combining Keynes's theory with an equilibrium system and advocated disequilibrium models instead.
It has been used as an input for testing theories explaining the distribution of income, for example human capital theory and the theory of economic discrimination (Becker, 1993, 1971). In welfare economics , a level of feasible output possibilities is commonly distinguished from the distribution of income for those output possibilities.
The First World War period saw a change of emphasis in economic theory away from industry-level analysis which mainly included analyzing markets to analysis at the level of the firm, as it became increasingly clear that perfect competition was no longer an adequate model of how firms behaved. Economic theory until then had focused on trying to ...
Alfred D. Chandler, Jr. - management, Pulitzer prize for The Visible Hand: The Managerial Revolution in American Business (1977) Clayton M. Christensen; Alexander Hamilton Church - industrial management (1900s–1910s) C. West Churchman; Stewart Clegg; Ronald Coase - transaction costs, Coase theorem, theory of the firm (1950s) (Nobel Prize in 1991)
The seven models are: Basic Provider, Approved Provider, Preferred Provider, Performance-Based/Managed Services Model, Vested outsourcing Business Model, Shared Services Model, and Equity Partnership Model. Sourcing business models are targeted for procurement professionals who seek a modern approach to achieve the best fit between buyers and ...
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