Demand management (demand-side policies): monetary policy: notes and practice questions
- This topic covers the use of monetary policy by central banks to manage an economy.
- Monetary policy involves controlling the money supply and interest rates.
- Key goals include achieving a low and stable rate of inflation, low unemployment, reducing business cycle fluctuations, promoting stable economic growth, and maintaining external balance.
- Real interest rates are calculated as the nominal interest rate minus the inflation rate.
- Central banks implement expansionary monetary policy to address deflationary/recessionary gaps and contractionary policy for inflationary gaps.
- The effectiveness of monetary policy can be constrained by factors such as interest rates approaching zero and low consumer confidence.
How it is examined
The effectiveness row supports a 15-mark part (b) at both levels. May 2025 Paper 2 TZ1 Q1(d) asked for an exchange rate diagram explaining how contractionary monetary policy could prevent a depreciation, for 4 marks, which is 3.5 running through 4.5. The real interest rate calculation is a 1-mark Paper 3 item. HL Paper 3 May 2025 Q2(a) also asked a 4-mark part on the money supply.
Real interest rate = nominal interest rate − inflation rate
- Monetary policy as the control of the money supply and interest rates by the central bank. (AO1)
- The goals of monetary policy: a low and stable rate of inflation, including inflation targeting; low unemployment; reducing business cycle fluctuations; promoting a stable economic environment for long-term growth; external balance. (AO2)
- Real versus nominal interest rates. (AO2)
- Expansionary and contractionary monetary policies used to close deflationary or recessionary gaps and inflationary gaps. (AO3, AO4)
The tools of monetary policy are HL only, which is easy to get wrong. An SL student knows the central bank changes interest rates and the money supply, and knows the goals and the effectiveness, but is not examined on open market operations, reserve requirements or quantitative easing. Money creation by commercial banks and the money market diagram are also HL only.
- The process of money creation by commercial banks. (AO2)
- The tools of monetary policy: open market operations, minimum reserve requirements, changes in the central bank minimum lending rate (base rate, discount rate or refinancing rate changes), and quantitative easing. (AO2)
- The demand for and supply of money, and the determination of equilibrium interest rates. (AO2, AO4)
Guiding questions
- How do governments manage their economy through the central bank, and how effective is it?
Linking questions
- Closes the gaps defined in 3.2.
- Aimed at the objectives set in 3.3, and the inflation and unemployment trade-off there.
- Interest rate changes shift the exchange rate in 4.5 through portfolio investment.
- Contrasts with fiscal policy in 3.6, and the two are routinely compared.
Practice questions
4 questions · 1 medium · 3 hardQuestion 1
MediumPaper 1 · no calculator25 marks(a) Explain why structural unemployment may be a persistent problem in an economy.
(b) Using real-world examples, discuss the view that supply-side policies are the most effective government response to the problem of unemployment.
Start by defining structural unemployment. Then, think about the causes, such as changes in technology or the decline of certain industries. For the 'persistent' part of the question, consider why it is difficult for workers who lose their jobs in these situations to find new ones quickly.
Start by explaining what supply-side policies are, distinguishing between interventionist and market-based types. Explain how they can reduce unemployment, particularly the natural rate. To 'discuss', you must evaluate their effectiveness by considering their strengths (e.g., targeting root causes) and weaknesses (e.g., time lags, costs). Crucially, you must also compare them with alternative policies, like demand-side (fiscal and monetary) policies, explaining what type of unemployment those policies are better at tackling. Use specific country examples to support your arguments.
Question 2
HardPaper 1 · no calculator25 marks(a) Explain the arguments for the imposition of trade protection.
(b) Using real-world examples, discuss the view that expansionary fiscal policy is more effective than expansionary monetary policy in lifting an economy out of a recession.
Think about the reasons why a government might want to restrict imports. Consider arguments related to new industries, jobs, national interests, and unfair practices by other countries. Try to explain at least three distinct arguments.
Start by explaining how both expansionary fiscal and monetary policies work to increase aggregate demand. Then, compare their strengths and weaknesses. Consider factors like time lags, political issues, and their effectiveness in different economic situations, such as a deep recession. Use a specific country's policy response to a recession (like the 2008 financial crisis or the COVID-19 pandemic) to support your arguments.
Question 3
HardPaper 1 · no calculator25 marks(a) Explain two factors that may cause a decrease in short-run aggregate supply.
(b) Using real-world examples, evaluate the effectiveness of monetary policy in controlling inflation.
Think about what determines the costs of production for firms across the whole economy. If these costs rise, what happens to the quantity of output firms are willing to supply at any given price level? Consider factors like wages, raw material prices, or government policies that affect business costs.
Start by explaining how contractionary monetary policy is supposed to work. Then, consider its limitations. Is it effective against all types of inflation? Are there time lags? What other factors might prevent it from working perfectly? Support your arguments with a real-world example of a country's central bank using monetary policy to fight inflation.
Question 4
HardPaper 1 · no calculator25 marks(a) Explain how cost-push factors can lead to an increase in the general price level.
(b) Using real-world examples, discuss the view that monetary policy is the most effective way for a government to deal with inflation.
Start by defining cost-push inflation. Then, identify at least two specific factors that could increase firms' costs of production. Use a correctly labelled AD/AS diagram to show how an increase in production costs affects the short-run aggregate supply curve and, consequently, the equilibrium price level and real output.
To 'discuss', you need to present a balanced argument. First, explain how contractionary monetary policy works to reduce inflation. Then, consider its limitations and drawbacks. Compare its effectiveness to other policies like fiscal policy or supply-side policies, especially considering different types of inflation (demand-pull vs. cost-push). Support your arguments with specific real-world examples of countries that have used monetary policy to fight inflation.
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Where marks are lost
- No real-world example, or a stated one. An answer that names a country and stops cannot reach the top two bands.
- One-sided argument. Balance is an explicit axis. A student who argues only that a policy works is capped at 9 out of 15 on that axis alone.
- Diagram present but not explained. The diagram bullet escalates across three bands: included, included and explained, included and fully explained. A diagram dropped into an answer without prose that refers to it sits at 5 to 6 on a 10-mark part.
