MacroeconomicsLesson 6 of 6 in the course The Aggregate Demand/Aggregate Supply Model

Keynesian, Intermediate, and Neoclassical Zones of the SRAS Curve

5 flashcards · 5 quiz questions · 5 match pairs · 5 fill-in sentences · English

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Summary

The AD/AS model can show how the effects of aggregate demand depend on where the economy is operating along the short-run aggregate supply (SRAS) curve. This lesson explores the Keynesian, intermediate, and neoclassical zones, connects them to Keynes’ law and Say’s law, and uses the pandemic-induced recession as an example of interacting supply and demand shocks.

All flashcards

What characterizes the Keynesian zone of the SRAS curve?
It is the relatively flat, far-left portion of SRAS. Output is well below potential GDP, cyclical unemployment is high, and AD shifts mainly affect output and employment.
How do aggregate demand shifts affect the neoclassical zone?
With output near potential GDP and SRAS nearly vertical, AD shifts mainly create pressure for the price level to change.
How do output and prices respond to AD shifts in the intermediate zone?
Both respond: stronger AD tends to raise output and prices, while weaker AD tends to lower them.
How are Keynes’ law and Say’s law reflected in the AD/AS model?
Keynes’ law describes demand determining output when resources are underused. Say’s law is associated with the importance of productive capacity for expanding output.
How did the pandemic affect aggregate supply and aggregate demand?
Health concerns and labor-market departures disrupted labor supply and production, while reduced consumer spending and business investment weakened aggregate demand.

Quiz questions

  1. Which conditions are typically associated with equilibrium in the Keynesian zone?Answer: Real GDP is well below potential, cyclical unemployment is high, and AD shifts mainly affect output.
  2. Why do AD shifts mainly create price-level pressure in the neoclassical zone?Answer: Output is near potential, leaving little room for real output to expand in response to stronger demand.
  3. What is a likely effect of a rightward AD shift in the intermediate zone?Answer: Output tends to rise and unemployment to fall, while the price level and inflationary pressure rise.
  4. What is needed to increase real GDP sustainably when the economy is in the neoclassical zone?Answer: A rightward shift of aggregate supply that increases productive capacity.
  5. Why is the 2020 pandemic-induced recession described as involving both supply and demand shocks?Answer: Labor availability and production were disrupted, while reduced consumer spending and business investment shifted AD left.

Based on Principles of Economics 3e by Steven A. Greenlaw, David Shapiro, Daniel MacDonald (OpenStax), licensed CC BY 4.0. Adapted into a summary, flashcards and quizzes.

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