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Unit 4: Macroeconomic Theory and Economic Policy

13 dot points, in syllabus order. Each dot point has a focused answer, with exam-style questions and worked answers where available.

What drives economic growth and what are its benefits and costs?

Define and measure economic growth using real GDP, explain its sources from aggregate demand and aggregate supply, and evaluate the benefits and costs of growth including sustainability

WACE Year 12 Economics Unit 4 on economic growth: measuring it with real GDP, the demand-side and supply-side sources of growth, the benefits for living standards and employment, and the costs including inflation, inequality and environmental sustainability.

6 min read →

What causes inflation and why does the RBA target it?

Define and measure inflation using the CPI, distinguish demand-pull from cost-push inflation, and explain the effects of inflation and the rationale for the RBA's inflation target

WACE Year 12 Economics Unit 4 on inflation: measuring it with the Consumer Price Index, the difference between demand-pull and cost-push inflation, the costs of high and unstable inflation, and why the RBA targets 2 to 3 percent.

6 min read →

How is unemployment measured and what are its different types and costs?

Define and measure unemployment and the participation rate, distinguish the types of unemployment, explain the concept of full employment and the NAIRU, and analyse the costs of unemployment

WACE Year 12 Economics Unit 4 on unemployment: how the ABS measures the unemployment and participation rates, the types of unemployment, the meaning of full employment and the NAIRU, and the economic and social costs of unemployment.

6 min read →

How does the federal government use the budget to manage the economy?

Explain fiscal policy, the federal budget, automatic stabilisers and discretionary policy, budget outcomes and government debt, and the strengths and weaknesses of fiscal policy

WACE Year 12 Economics Unit 4 on fiscal policy: the federal budget, automatic stabilisers versus discretionary spending, budget outcomes and debt, and the strengths and weaknesses of using the budget to manage demand.

8 min read →

How does microeconomic reform lift productivity and aggregate supply?

Explain microeconomic reform and supply-side policy, how it raises productivity and aggregate supply, and evaluate examples in the Australian economy

WACE Year 12 Economics Unit 4 on microeconomic reform: supply-side policy to lift productivity and aggregate supply, the main areas of reform, and Australian examples and their strengths and weaknesses.

8 min read →

How does the RBA use monetary policy to manage the economy?

Explain monetary policy, the role of the RBA, the cash rate as the policy instrument, the transmission mechanism, the policy stance, and the strengths and weaknesses of monetary policy

WACE Year 12 Economics Unit 4 on monetary policy: the RBA's inflation target, the cash rate instrument, the four-channel transmission mechanism, the policy stance, and the 2022 to 2024 tightening cycle.

9 min read →

How is income distributed in Australia and how is inequality measured?

Distinguish income from wealth, explain how the Lorenz curve and Gini coefficient measure inequality, and evaluate the causes, effects and policy responses to income inequality in Australia

WACE Year 12 Economics Unit 4 on the distribution of income and wealth: the difference between income and wealth, measuring inequality with the Lorenz curve and Gini coefficient, the causes and effects of inequality, and the policies used to redistribute in Australia.

6 min read →

What are the government's macroeconomic objectives and how do they conflict?

Explain the macroeconomic objectives of low inflation, full employment and economic growth, how each is measured, and the conflicts between them

WACE Year 12 Economics Unit 4 on macroeconomic objectives: low inflation, full employment and economic growth, how the ABS measures each, and the trade-offs governments face between them.

8 min read →

Why does an initial change in spending lead to a larger change in national income?

Explain the multiplier process, calculate the multiplier from the marginal propensities, and use it to analyse the effect of a change in injections on the level of economic activity

WACE Year 12 Economics Unit 4 on the multiplier: how an initial injection sets off successive rounds of spending, how to calculate the multiplier from the marginal propensity to leak, and how the size of leakages determines the final change in national income.

6 min read →

How do leakages and injections determine the level of national income?

Explain the five-sector circular flow of income, identify the leakages and injections, and use the equilibrium condition to explain how the level of economic activity is determined

WACE Year 12 Economics Unit 4 on the circular flow of income: the five sectors, the leakages of saving, tax and imports, the injections of investment, government spending and exports, and how equilibrium national income is determined when leakages equal injections.

6 min read →

How do aggregate demand and aggregate supply determine output and prices?

Explain the components of aggregate demand and aggregate supply, the AD/AS model, the business cycle and the multiplier

WACE Year 12 Economics Unit 4 on the AD/AS model: the components of aggregate demand, what shifts aggregate supply, the business cycle, and how the multiplier amplifies spending changes.

8 min read →

What causes the economy to move through booms and recessions?

Describe the phases of the business cycle, explain the causes of cyclical fluctuations including cumulative processes and shocks, and explain how turning points and stabilisers shape the cycle

WACE Year 12 Economics Unit 4 on the business cycle: the expansion, peak, contraction and trough phases, the cumulative multiplier and confidence processes that drive fluctuations, the turning points, and how automatic stabilisers and shocks shape the path of activity.

6 min read →

What determines wages and why does labour productivity growth matter?

Explain how wages are determined in the labour market, define and measure labour productivity, and analyse the factors and policies that influence labour productivity growth

WACE Year 12 Economics Unit 4 on the labour market and productivity: how wages are set by labour demand and supply and the industrial relations system, how labour productivity is measured, and the human and physical capital factors that drive productivity growth.

6 min read →