Economic Definition of four-sector Keynesian model. Defined.
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Term four-sector Keynesian model Definition: A model used to identify equilibrium in Keynesian economics based on aggregate expenditures by all four sectors (household, business, government, and foreign). Equilibrium is achieved at the intersection of the aggregate expenditures line, AE = C + I + G + (X - M), and the 45-degree line, Y = AE. This is the complete Keynesian aggregate expenditures model can be used to analyzed the impact of the foreign sector on aggregate expenditures and equilibrium.