Economics Chapter 26: Aggregate Output and Prices

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Questions and Answers

What effect does an increase in the interest rate from 3% to 6% have on planned aggregate expenditure?

  • It lowers planned aggregate expenditure. (correct)
  • It has no effect on planned aggregate expenditure.
  • It increases planned aggregate expenditure.
  • It only affects government spending.

How does a high interest rate impact planned investment?

  • It has no impact on planned investment.
  • It discourages planned investment. (correct)
  • It encourages planned investment.
  • It increases government investment only.

What is the relationship between output and the interest rate in the goods market as represented by the IS curve?

  • There is a negative relationship. (correct)
  • There is a positive relationship.
  • There is no relationship.
  • It is an inverse relationship.

What happens to equilibrium output when planned aggregate expenditure decreases?

<p>Equilibrium output decreases. (C)</p> Signup and view all the answers

What occurs to the IS curve when government spending increases while the interest rate is fixed?

<p>The IS curve shifts to the right. (B)</p> Signup and view all the answers

What two main inputs does the Fed consider when making interest rate decisions?

<p>Output (Y) and inflation (P) (A)</p> Signup and view all the answers

Which of the following statements about planned aggregate expenditure is accurate?

<p>It decreases with higher interest rates. (D)</p> Signup and view all the answers

What best describes the Fed rule regarding interest rate decisions?

<p>It is influenced by economic factors outside the model. (C)</p> Signup and view all the answers

What does the short-run aggregate supply (AS) curve represent?

<p>The price decisions and output decisions of all firms under various demand levels (A)</p> Signup and view all the answers

Why does the short-run aggregate supply curve have a positive slope?

<p>Wages are a significant part of costs, and they adjust slowly to price changes (C)</p> Signup and view all the answers

What does the vertical part of the short-run AS curve signify?

<p>Maximum output achievable by the economy (D)</p> Signup and view all the answers

What causes shifts in the short-run aggregate supply curve?

<p>Changes in production costs or resources availability (C)</p> Signup and view all the answers

How does the short-run AS curve behave at low levels of output?

<p>It is flatter, allowing for larger output responses to small price increases (D)</p> Signup and view all the answers

What happens to the aggregate supply curve when there is a cost shock?

<p>It shifts to the left, indicating lower output at any price level (C)</p> Signup and view all the answers

What is the relationship between interest rates and planned aggregate expenditure?

<p>Decreasing interest rates lead to increased planned spending (A)</p> Signup and view all the answers

Which factor primarily influences the shape of the short-run aggregate supply curve?

<p>Wage dynamics in relation to price levels (B)</p> Signup and view all the answers

What effect does the real wealth effect have on consumption?

<p>It influences consumption by changing due to variations in the price level. (D)</p> Signup and view all the answers

Why does the aggregate demand (AD) curve slope downwards?

<p>Increased prices generally lead to higher interest rates. (D)</p> Signup and view all the answers

What happens to the AD and equilibrium price level when planned aggregate expenditure increases?

<p>AD shifts to the right, leading to a higher equilibrium price level. (C)</p> Signup and view all the answers

What is referred to as potential GDP?

<p>Aggregate output achievable without inflation in the long run. (A)</p> Signup and view all the answers

How do wages affect the long-run aggregate supply (AS) curve?

<p>High unemployment leads to lower wages, shifting the AS curve up. (D)</p> Signup and view all the answers

In the case of an inflationary gap, what typically happens to the price level?

<p>The price level rises due to increased demand exceeding full capacity. (D)</p> Signup and view all the answers

What portion of the short-run AS curve aligns with the concept of potential output?

<p>The vertical portion indicating limits on production capacity. (A)</p> Signup and view all the answers

What defines the equilibrium output in the Keynesian Aggregate Supply curve?

<p>It varies based on shifts in planned aggregate expenditure and AD. (A)</p> Signup and view all the answers

What does an increase in output typically lead to regarding interest rates according to the Fed rule?

<p>Interest rates increase (B)</p> Signup and view all the answers

Which statement accurately describes the relationship between the AD curve and the overall price level?

<p>AD decreases when the price level increases (C)</p> Signup and view all the answers

What is the role of the Core Personal Consumption Expenditures (PCE) price index in Fed monetary policy?

<p>To eliminate price volatility from food and energy (A)</p> Signup and view all the answers

What happens to planned investment (I) when the Federal Reserve raises the interest rate?

<p>Planned investment decreases (A)</p> Signup and view all the answers

How does the Fed typically respond to rising prices according to the information provided?

<p>By raising interest rates (C)</p> Signup and view all the answers

Why is it significant that the AD curve is not a simple market demand curve?

<p>Because multiple prices may rise simultaneously (D)</p> Signup and view all the answers

What characterizes the intersection of the AS and AD curves?

<p>It decides equilibrium output and price level (D)</p> Signup and view all the answers

What might be a consequence of including food and energy prices in the Fed's price level measure?

<p>More volatility in inflation measures (A)</p> Signup and view all the answers

What does the aggregate supply curve represent?

<p>The relationship between aggregate output and the overall price level. (B)</p> Signup and view all the answers

Why is the aggregate demand (AD) curve typically downward sloping?

<p>Lower prices result in higher consumer purchasing power. (A)</p> Signup and view all the answers

What typically signifies the equilibrium point in the context of AD and AS curves?

<p>The intersection of the AD and AS curves. (B)</p> Signup and view all the answers

What does the long-run aggregate supply (LRAS) curve indicate?

<p>It reflects the economy’s potential GDP in the long run. (C)</p> Signup and view all the answers

Which of the following can cause the short-run aggregate supply (AS) curve to shift?

<p>Alterations in the cost of production inputs. (B)</p> Signup and view all the answers

Which of the following is NOT a reason for the downward slope of the aggregate demand curve?

<p>The supply effect. (A)</p> Signup and view all the answers

What might lead to a rightward shift of the aggregate demand curve?

<p>A decrease in overall interest rates. (C)</p> Signup and view all the answers

In the context of the economy, how is output related to the price level?

<p>Output increases as the price level decreases in the short run. (A)</p> Signup and view all the answers

Flashcards

Aggregate Supply (AS)

The total supply of all goods and services that firms in an economy are willing and able to produce at various price levels.

Aggregate Supply (AS) Curve

A graph that shows the relationship between the aggregate quantity of output supplied by all firms in an economy and the overall price level.

Short-Run AS Curve

The AS curve is upward sloping due to increasing costs of production as output rises. As prices go up, firms are willing to produce more but at a higher cost.

Shifts in the Short-Run AS Curve

Changes in resource prices, technology, taxes, subsidies, and expectations about future prices can shift the AS curve.

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Aggregate Demand (AD)

The total demand for goods and services in an economy at all price levels.

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Aggregate Demand (AD) Curve

A graph showing the relationship between the price level and the quantity of real GDP demanded.

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Downward Sloping AD Curve

The AD curve is downward sloping because of the wealth effect, interest rate effect, and exchange rate effect.

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Equilibrium Point

The intersection of the AD and AS curves represents the equilibrium point where the quantity of goods and services produced equals the quantity demanded at a given price level.

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Short-run Aggregate Supply (AS) Curve

A curve that shows the relationship between the price level and the quantity of output supplied in the short run. It is upward sloping because wages are sticky in the short run, meaning they don't adjust immediately to changes in prices.

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Cost Shock (Supply Shock)

A change in the cost of production that shifts the short-run aggregate supply curve. Examples include changes in the price of oil or a natural disaster.

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Capacity Output (Ȳ)

The maximum level of output that an economy can produce with its existing resources and technology. It represents the vertical part of the short-run AS curve.

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Planned Aggregate Expenditure

The total amount of spending planned in the economy, including consumption, investment, government spending, and net exports.

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Interest Rate Effect

The effect of changes in the interest rate on planned aggregate expenditure. Higher interest rates discourage borrowing and investment, reducing aggregate demand.

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Wealth Effect

The effect of changes in the price level on the value of real wealth. Higher prices reduce the real value of wealth, leading to lower spending.

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Exchange Rate Effect

The effect of changes in the price level on the exchange rate. Higher prices make domestic goods more expensive relative to foreign goods, leading to lower net exports.

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IS curve

The relationship between the interest rate and aggregate output in the goods market. It shows all the combinations of interest rates and output levels where planned expenditure equals actual expenditure.

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Federal Funds Rate

A policy tool used by the Federal Reserve to influence interest rates and, consequently, economic activity.

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Fed Rule

An equation that demonstrates how the Fed's interest rate decision is influenced by the state of the economy, particularly output and inflation.

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Equilibrium output

The level of output at which planned aggregate expenditure equals actual output. It's the equilibrium point in the goods market.

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Government Spending and the IS Curve

An increase in government spending shifts the IS curve to the right, leading to a higher equilibrium output for a given interest rate.

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Interest Rate and Equilibrium Output

A higher interest rate discourages investment, causing a decrease in planned aggregate expenditure, which ultimately leads to a lower equilibrium output level.

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Z (other economic factors)

Factors that influence the Fed's interest rate decision alongside output and inflation.

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Equilibrium in the Fed's framework

The point at which the Fed's interest rate target is exactly equal to the equilibrium interest rate in the goods market. It's the intersection of the IS curve and the Fed's monetary policy rule.

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Why is the Fed Chair powerful?

The Fed Chair's influence on the economy through interest rates and monetary policy.

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How does the Fed rule impact equilibrium output?

The Fed raises interest rates when output increases to control inflation. This move shifts the Fed rule left, influencing the equilibrium output.

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What is the Aggregate Demand (AD) Curve?

The aggregate demand (AD) curve shows the relationship between the price level and the total demand for goods and services in an economy. It slopes downwards because a higher price level leads the Fed to raise interest rates, which lowers investment and output.

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How is the AD curve derived?

The AD curve is derived from the equilibrium points of output and interest rates based on different price levels. It reflects the negative relationship between price level and aggregate output, influenced by the Fed's response to inflation.

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What index does the Fed use to monitor inflation?

The Fed's primary focus is on a price index called the Core Personal Consumption Expenditures (PCE) which excludes volatile food and energy prices to provide a more stable measure of inflation.

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How might Fed policy change if it included energy and food prices?

The Fed's policy might change if it included energy and food prices in its inflation measure. For example, the Fed might raise interest rates more aggressively during periods of high energy or food inflation.

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What determines equilibrium output and price level?

The equilibrium output and price level are determined by the intersection of the aggregate supply (AS) and aggregate demand (AD) curves.

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What is the Aggregate Supply (AS) curve?

The aggregate supply (AS) curve shows the relationship between the price level and the quantity of goods and services that firms are willing and able to produce. The AS curve can shift due to changes in resource prices, technology, or government policy.

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Real Wealth Effect

The change in consumption due to changes in real wealth caused by changes in the price level.

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Potential GDP

The level of aggregate output an economy can sustain in the long run without inflation.

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Vertical AS curve

The vertical portion of the short-run AS curve illustrates that the economy has a limited capacity to produce goods and services.

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Inflationary Gap

The situation where planned aggregate expenditure (AE) exceeds potential output, leading to a rise in the price level.

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Real Balance / Wealth Effect

The change in consumption (C) caused by alterations in the real value of assets brought about by price level shifts.

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Long-Run AS Curve

The long-run aggregate supply curve is vertical, reflecting the idea that the economy produces at potential output regardless of the price level in the long run.

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Study Notes

Chapter 26: Determination of Aggregate Output, Price Level, and Interest Rate

  • This chapter brings together output, price level, and interest rate components of the economy.
  • The succeeding chapter will cover key policy concerns faced by policymakers attempting to manage the economy.

26.1 Aggregate Supply (AS) Curve

  • Aggregate Supply: Total supply of goods and services in an economy.
  • AS Curve: Graph showcasing the relationship between aggregate output supplied by firms and the overall price level. Viewed as a price/output response curve.

26.1 Aggregate Supply (AS) Curve (cont.)

  • The short-run AS curve has a positive slope.
  • At low output levels, the AS curve is relatively flat.
  • When approaching capacity, the curve becomes almost vertical.
  • At full capacity, the curve is vertical.
  • Wages comprise a substantial portion of total costs.
  • Wage adjustments lag behind price changes, resulting in an upward-sloping short-run AS curve.
  • Changes in production costs lead to shifts in the short-run AS curve. Examples include developments in energy production or commodity price fluctuations.

26.1 Aggregate Supply (AS) Curve (cont. - Shifts)

  • The vertical part of the short-run AS curve reflects maximum/capacity output, which is determined by the existing resources.
  • New discoveries, or problems in energy production, can shift the AS curve by influencing marginal production costs.
  • A change in costs (cost shock/supply shock) will shift the short-run AS curve.

26.2 Aggregate Demand (AD) Curve

  • The AD Curve is not the sum of individual market demands.
  • The AD curve is derived from the goods market model (Chapters 23 &24) and Fed behaviour.
  • Planned aggregate expenditure (AE) and the interest rate are important consideration in AD curve derivation.
  • AE = C + I + G
  • When the interest rate increases, planned expenditure decreases. Conversely, a decrease in the interest rate causes planned spending to rise.
  • This relationship between the interest rate and planned expenditure leads to the downward slope of the AD curve.

26.3 Equilibrium Point

  • The intersection of the AD and AS curves represents equilibrium.

26.4 Additional Reasons for Downward-Sloping AD Curve

  • The Federal Reserve will increase interest rates when prices increase. Investment expenditure is negatively influenced by the interest rate.
  • The real wealth effect is also a factor. A rise in the price level brings about a decrease in real wealth, causing consumer spending to decline.

26.5 The Long-Run AS Curve

  • The long-run aggregate supply curve highlights long-run market adjustments to potential GDP.
  • Its shape illustrates the long-run response of markets to price change.

The Fed's Behavior

  • Output (Y) and inflation (P) influence the Fed's interest rate decisions.
  • The Fed rule equation explains how the Fed's interest rate decisions are linked to economic conditions (i.e., output and inflation).
  • Additional factors which are not within the model (factors encompassed by Z) also influence the Fed’s interest rate decisions.

IS Curve

  • The IS curve shows the relationship between aggregate output and the interest rate within the goods market.
  • With a fixed interest rate, an increase in government spending (G) will increase planned aggregate expenditure (AE) leading to a rise in equilibrium output (Y).

Deriving the AD Curve

  • Changes in the overall price level (P) affect the Fed's interest rate decisions.
  • Due to the correlation between price levels, and interest rate adjustments, the ceteris paribus assumption can't be applied to derive the AD curve.
  • Higher prices induce the Federal Reserve to increase interest rates, reducing investment and output; this relationship between price level and output explains the AD curve's downward slope.

The Final Equilibrium

  • Output (Y) and prices (P) are determined at the intersection of the aggregate supply and demand curves (AD and AS).
  • These curves encompass the decisions of households, businesses, and the government.

Potential GDP

  • The vertical portion of the short-run AS curve represents the economy's physical production limits.
  • Potential GDP (or potential output) is the maximum aggregate output a sustained economy can achieve in the long term without causing inflation.

Potential GDP (Short-Run Equilibrium Below Potential output)

  • Economists disagree on determining whether an economy is operating beneath, at, or above potential output.
  • Those who believe the long-run AS curve is vertical suggest output rising with falling wages and high unemployment.

'Keynesian' aggregate supply curve

  • Equilibrium output (Y) is influenced by planned aggregate expenditure (AE) and aggregate demand (AD).
  • A change in planned aggregate expenditure shifts the AD curve, causing the output to rise but maintaining a constant price level.
  • If AE exceeds potential output, an inflationary gap and a rise in the overall price level will arise.

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