EconomicsAP®︎/College MacroeconomicsNational income and price determinationChanges in the AD-AS model in the short run Show Lesson summary: Changes in the AD-AS model in the short runIn this lesson summary review and remind yourself of the key terms and graphs related to changes in the AD-AS model. Topics include AD shocks, such as changes in consumption, investment, government spending, or net exports, and supply shocks such as price surprises that impact SRAS, and how changes in either of these impact output, unemployment, and the price level. If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Recommended textbook solutions
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How does an increase in oil prices affect shortAssuming other costs remain unchanged (ceteris paribus), this rise in oil prices will lead to an inward shift of supply across many industries. As a result, short run aggregate supply (SRAS) will also shift inwards.
What shifts the shortThe reason the short-run Phillips curve shifts is due to the changes in inflation expectations. Workers, who are assumed to be completely rational and informed, will recognize their nominal wages have not kept pace with inflation increases (the movement from A to B), so their real wages have been decreased.
What happens in the shortMore spending makes prices sticky, so inflation skyrockets in the short run.
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