ECON 295 Chapter Notes - Chapter 21: Pessimism, Retained Earnings, Ceteris Paribus

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National income accounts measure actual expenditures in each of the 4 expenditures categories. Our model of the macro-economy also deals w/ desired expenditures in each of these 4 categories. The national accounts divide actual gdp into its components: Total desired expenditure is divided into the same categories: desired consumption, c, desired investment, i, desired government purchases, g, desired net exports, nx. The sum is called desired aggregate expenditure: (cid:2161)=(cid:2159)+++(cid:2170)(cid:2180) (cid:2161)=(cid:2159)+ 2 types of expenditures: autonomous expenditures don"t depend on lvl of national income (aut. Expenditures can & , but such s don"t systematically occur in response to s in national income: induced expenditures do depend on level of national income (induced expenditures are systematically related to national income // gdp causes this ) Simplest economy no gvmt + no trade (i. e. closed" economy + no gvmt) Assumes prices are constant (don"t ) (price lvl constant) no inflation.

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