EC140 Lecture Notes - Lecture 7: Potential Output, Aggregate Supply, Aggregate Demand
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Relaionship between quanity of real gdp demanded and the price level. Aggregate demand curve (ad) plots quanity of real gdp demanded against price level. Wealth efect: rise in price level decreases quanity of real wealth (money, stocks ) To restore real wealth, people increase saving and decrease spending. Quanity of real gdp demanded: fall in price level increases quanity of real wealth. Rise in price level decreases real value of money and raises interest rate. People borrow and spend less so real gdp demanded decreases. Fall in price level increases real value of money and lowers interest rate. People borrow and spend more so real gdp demanded increases: internaional subsituion efect. Rise in price level increases price of domesic goods to foreign goods. Fall in price level increases quanity of real gdp. Change in inluences on buying plans other than price level changes aggregate demand. Expectaions about future income, future inlaion, and future proits change aggregate demand.