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An increase in government expenditures or decrease in taxes, therefore leads to an increase in GDP as government expenditures are a component of aggregate demand. net exports ( N X {\displaystyle NX} and sometimes ( X − M {\displaystyle X-M} )), net demand by the rest of the world for the country's output.
Aggregate employment is determined by the demand for labor as firms hire or fire workers to recruit enough labor to produce the goods demanded to meet aggregate expenditure. In Keynesian economic theory, equilibrium is typically assumed to occur at less than full employment, an assumption that is justified by appealing to the empirical ...
Keynes interprets this as the demand for investment and denotes the sum of demands for consumption and investment as "aggregate demand", plotted as a separate curve. Aggregate demand must equal total income, so equilibrium income must be determined by the point where the aggregate demand curve crosses the 45° line. [63]
In Keynesian economics, the transfer payments multiplier (or transfer payment multiplier) is the multiplier by which aggregate demand will increase when there is an increase in transfer payments (e.g., welfare spending, unemployment payments). [1]
The multiplier effect has been used as an argument for the efficacy of government spending or taxation relief to stimulate aggregate demand. In certain cases multiplier values less than one have been empirically measured (an example is sports stadiums), suggesting that certain types of government spending crowd out private investment or ...
The first part is autonomous investment, the second is investment induced by interest rates and the final part is investment induced by changes in consumption demand (the "acceleration" principle). It is assumed that b > 0. As we are concentrating on the income-expenditure side, let us assume I(r) = 0 (or alternatively, constant interest), so that:
Aggregate consumption is a component of aggregate demand. [8] Consumption is defined in part by comparison to production. In the tradition of the Columbia School of Household Economics, also known as the New Home Economics, commercial consumption has to be analyzed in the context of household production.
One proposed mechanism is via increased aggregate demand. Government spending or tax cuts can be used to increase aggregate demand. This rise in demand leads to more employment opportunities as businesses "crowd in" to take advantage of the opportunity. Another is based on the ability of the government to resolve deflation.