Introduction to Macroeconomics

Quizzes

23 multiple-choice questions across 3 levels. You'll see whether each answer is right as you go, and the full answers with explanations at the end.

Practice questions

Written questions to test yourself. Try each one on paper before opening the model answer.

Medium level

1. M8

   Explain why macroeconomics cannot be reduced to 'just applying microeconomics at a larger scale'. Use the fallacy of composition in your answer.

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   Macroeconomics studies economy-wide interactions that produce outcomes individual-market analysis cannot explain. The fallacy of composition illustrates this: each household rationally saving more during a recession reduces aggregate spending, deepening the recession — a collectively harmful outcome from individually rational decisions.
2. M9

   A government announces a large infrastructure spending programme. Using the circular flow framework, trace the effect of this injection through the economy. Identify at least two sectors affected.

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   Government spending (G) is an injection. This raises income for firms supplying the infrastructure and workers employed on it (firms sector), who in turn spend more on goods and services (households sector), creating a multiplier effect. The financial sector also sees increased deposit activity from higher incomes.
3. M10

   Write one original positive statement and one original normative statement, both related to macroeconomic policy. Explain the difference between them.

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   Positive example: 'Australia's unemployment rate fell from 5% to 3.7% between 2021 and 2023.' Normative example: 'The government should prioritise full employment over reducing the budget deficit.' The positive statement is verifiable; the normative statement reflects a value judgement about policy priorities.

Hard level

1. H7

   The Paradox of Thrift: (a) Define the paradox precisely. (b) Use the circular flow to show the mechanism by which individually rational saving reduces aggregate income. (c) Explain what this reveals about the relationship between microeconomic rationality and macroeconomic outcomes. (d) Identify one policy response and explain how it works through the circular flow.

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   (a) Even though saving is rational for individuals, if all save simultaneously, consumption falls, reducing firm revenue, income, and employment. (b) In the circular flow, a rise in S (leakage) without an offsetting rise in I, G, or X reduces injections, contracting income. (c) Demonstrates the fallacy of composition — micro rationality ≠ macro optimality. (d) Fiscal stimulus (↑G) is an injection that offsets the rise in S, restoring equilibrium.
2. H8

   Evaluate the claim: 'The three macroeconomic goals — output growth, low inflation, and low unemployment — are fully compatible and a well-run economy can achieve all three simultaneously.' (a) When might this be approximately true? (b) When are trade-offs unavoidable? (c) Use one real-world example. (d) How does the short-run vs long-run distinction apply?

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   (a) At potential output with anchored expectations, all three goals can coexist. (b) Trade-offs arise in the short run: stimulus to cut unemployment risks raising inflation (Phillips curve). (c) RBA 2022–23: rate hikes to fight inflation caused unemployment to rise. (d) In the long run the economy returns to potential regardless — the trade-off is a short-run phenomenon.
3. H9

   A student argues: 'Because every individual market is in equilibrium, the macroeconomy must also be in equilibrium.' Critically evaluate this argument. (a) What does it mean for a single market to be in equilibrium? (b) Why is economy-wide equilibrium a separate concept? (c) Give one macroeconomic example that disproves the student's claim. (d) Name the logical error.

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   (a) A single market clears when its own supply equals its own demand. (b) Economy-wide equilibrium requires all markets to clear simultaneously — Walras' Law, coordination across markets. (c) The Great Depression: each goods market could be in local balance yet aggregate demand was far below potential. (d) The fallacy of composition.
4. H10

   Write a structured argument (300–400 words) responding to: 'Macroeconomics is not a science — it is organised political opinion.' Address: (a) what would make it scientific; (b) ways it resembles a science; (c) ways it differs; (d) your reasoned conclusion.

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   Science: empirical testing, falsifiable models, peer review. Resembles science: uses data, makes predictions, publishes in journals. Differs: natural experiments are rare; values contaminate policy conclusions; economies change structure over time. Reasonable conclusion: macroeconomics is a science with significant normative elements — especially at the policy application stage.