2015 HSC Economics: Worked Solutions

Worked solutions to the 2015 HSC Economics examination.

Get the paper first. These solutions describe each question rather than reproducing it, so open the official paper alongside. NESA publishes it free in the 2015 Economics exam pack. The answers below are checked against the official marking guidelines. The explanations are our own.

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Section I: multiple choice

Answer key

Q	A	Q	A	Q	A	Q	A
1	A	6	C	11	C	16	B
2	B	7	D	12	A	17	C
3	D	8	A	13	C	18	A
4	D	9	D	14	D	19	B
5	A	10	B	15	A	20	B

The reasoning

1. Foreign producers selling below cost. A. To prevent dumping, which is exactly what selling below the cost of production in a foreign market means. The other options are all genuine arguments for protection, but none of them fits the specific fact the question gives you.

2. Shortest implementation lag. B. Monetary policy. The RBA Board can change the cash rate at a scheduled meeting and it takes effect immediately. Fiscal policy requires a Budget and legislation, while labour market and microeconomic reform take years to legislate and implement.

3. Most likely to increase gross world product. D. Increased investment by transnational corporations in developing countries, which adds to the capital stock, transfers technology and raises productivity where the return to additional capital is highest. Higher central bank rates contract activity, increased protection reduces specialisation and world output, and migration to developing countries is not a significant driver of world output.

4. Negative impact of FDI in an emerging economy. D. An increase in the influence of transnational corporations on government regulation. Where a TNC's revenue is large relative to the host economy, it can press for weaker labour, environmental or tax rules, a loss of policy sovereignty sometimes described as regulatory capture. The other three options are all benefits, and option C describes a substantial rise in HDI.

5. Foreign aid to build schools. A. A debit in the capital account.

This is the question most students get wrong, so learn the rule properly. Aid tied to the acquisition or construction of a fixed asset, such as a school, a road or a hospital building, is a capital transfer and belongs in the capital account. Aid that funds consumption, including general budget support, humanitarian relief and food aid, is a current transfer and belongs in net secondary income. It is a debit either way, since money leaves Australia, but the account differs entirely.

The same distinction decides 2019 Question 17, where aid to build a road was also a capital account debit, and 2025 Question 10, where unconditional aid was correctly secondary income. Ask what the aid buys, not whether it is aid.

6. Improving efficiency and international competitiveness. C. Improving efficiency means reducing protection and exposing domestic industries to competition. Increase the import quota, which permits more imports and is a reduction in protection, and decrease the subsidy, removing the assistance that lets inefficient firms survive.

Read the quota direction carefully, because increasing a quota loosens the restriction. This catches candidates every year, in both directions.

7. Best policy response. D. Read the data before choosing.

GDP growth:   4.0%  →  4.5%   (accelerating, above trend)
Inflation:    2.7%  →  3.8%   (now ABOVE the 2 to 3% target)
Unemployment: 5.0%  →  4.5%   (falling, likely below the NAIRU)

Every indicator points to an economy growing beyond sustainable capacity, so both instruments should be contractionary. This is the rare case with no policy conflict, which is why the mixed options are wrong.

8. Automatic stabiliser during an upswing. A. Income tax, and specifically progressive income tax. As incomes rise in an upswing, taxpayers move into higher marginal brackets, so the average tax rate rises without any legislated change and a growing share of additional income is withdrawn. That dampens the expansion automatically.

Company tax and the GST also rise with activity, but income tax is the strongest stabiliser because progressivity means receipts rise faster than proportionally with income. Tariff revenue is a minor and shrinking revenue source.

9. Change in the equilibrium value of the AUD. D. The diagram showed demand shifting from D to D1, meaning demand fell, so the AUD depreciated. That eliminates the two appreciation options immediately.

The cause must reduce demand for AUD: a rise in foreign interest rates relative to Australian rates narrows the differential in Australia's favour, so capital flows offshore and foreign demand for AUD falls.

10. Terms of trade and international competitiveness. B. Both decreased.

ToT = (export price index ÷ import price index) × 100
  Year 1: 100 ÷ 100 × 100 = 100
  Year 2: 100 ÷ 110 × 100 = 90.9        →  DECREASED

TWI: 60 → 70  →  APPRECIATION  →  competitiveness DECREASED

Two separate calculations from two different parts of the table. Import prices rose while export prices were flat, which worsens the terms of trade, and the currency appreciated, which makes exports dearer to foreign buyers.

11. Reducing the Gini coefficient. C. A lower Gini means less inequality, so both measures must be progressive. Increased childcare subsidies for low-income earners raise the disposable income of the bottom of the distribution and support workforce participation, and a higher top marginal rate takes more from the top. Both push the same way, which no other option manages, since each of A, B and D contains at least one regressive element.

12. Environmentally sustainable recycling innovation. A. A positive externality and a reduction in social costs. Recycling reduces landfill, pollution and the depletion of raw materials, and those benefits accrue to third parties who are not part of the transaction. Reducing the negative externality of waste disposal lowers social costs.

Check the wording of the distractors carefully, because C pairs a positive externality with a reduction in social benefits, which is self-contradictory.

13. Increasing efficiency and equilibrium output. C. The AS curve shifts to the right. Improved efficiency raises productive capacity, so output rises while the price level falls, which is the desirable combination. An AD shift right would raise output but also the price level, and it would not improve efficiency, since efficiency is a supply-side concept.

14. Falling unemployment with falling participation. D. Both halves must work.

Unemployment: 7% → 5%    →  needs something that raises labour demand
Participation: 65% → 60% →  needs something that removes people from the labour force

Increased consumer confidence raises aggregate demand and therefore the derived demand for labour, lowering unemployment. An increase in school retention rates keeps young people in education and out of the labour force, lowering participation. Option C fails on its second half, because childcare subsidies raise participation.

15. Deterioration in the structural component of the current account deficit. A. An increase in net foreign liabilities. The structural component is the persistent element independent of the business cycle, driven by the servicing of accumulated foreign liabilities through net primary income. Larger liabilities mean larger servicing obligations in every future year.

Options C and D are cyclical influences, since export volumes and import demand rise and fall with the business cycle and the terms of trade. Distinguishing structural from cyclical is the whole question.

16. Increasing investment to raise national income by $1000. B.

MPS = ΔS ÷ ΔY = (500 − 400) ÷ (1500 − 1000) = 100 ÷ 500 = 0.2
k = 1 ÷ MPS = 5

Required ΔI = ΔY ÷ k = 1000 ÷ 5 = $200

Work backwards through the multiplier here. The instinct is to multiply, which gives the $5000 that is not offered, and candidates then guess. Divide the target increase by the multiplier.

17. RBA purchases Commonwealth Government Securities. C. Buying securities pays money into the banking system, increasing Exchange Settlement balances and putting downward pressure on the cash rate, which is expansionary.

Lower cash rate  →  narrower interest rate differential  →  AUD DEPRECIATES
Lower cash rate  →  higher C and I  →  Australian GDP RISES

The direction of the open market operation is the trap. Buying securities is expansionary and selling them is contractionary, which is the reverse of what many candidates assume.

18. Growth rate of real GDP in Year 2. A.

GDP = C + I + G + (X − M)
  Year 1: 500 + 200 + 300 + (100 − 100) = 1000
  Year 2: 550 + 250 + 300 + (200 − 200) = 1100

Real GDP Year 2 = 1100 ÷ 110 × 100 = 1000
Real growth = (1000 − 1000) ÷ 1000 × 100 = 0%

Nominal GDP rose 10% and prices rose 10%, so real output did not change. Note that exports and imports both rose by 100, so net exports stayed at zero and contributed nothing.

19. Headline rising while underlying falls. B.

Headline:   2.0%  →  3.2%   (RISING)
Underlying: 1.7%  →  1.2%   (FALLING)

The two are moving in opposite directions, so you need two causes pushing opposite ways. Flooding in agricultural areas is a volatile, one-off supply shock that raises food prices and therefore headline inflation, and it is precisely the kind of movement the trimmed mean strips out. Increased microeconomic reform raises productivity and competition, lowering broad-based cost pressure and therefore underlying inflation.

Every other row has both causes pushing the same way.

20. Value of the capital account. B.

Current account = BOGS + net primary income + net secondary income
                = 50 + (−200) + 25 = −$125 billion

Financial account = direct investment + portfolio investment
                    + financial derivatives + reserve assets
                  = 50 + 45 + 5 + 10 = +$110 billion

CA + capital account + financial account = 0
−125 + KA + 110 = 0   →   KA = +$15 billion SURPLUS

The difficulty is that the data are deliberately scrambled, mixing current account and financial account components in no order. Sort each item into the correct account before calculating anything, then apply the identity.

Where marks were lost. Question 5 was the discriminator, and the capital against current transfer distinction remains the single most reliably misunderstood point in the balance of payments. Question 16 caught candidates who multiplied instead of dividing. Question 20 caught candidates who added the components without first sorting them.

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Section II: short answer

Question 21 (10 marks): environmental sustainability

(a) Distinguish between renewable and non-renewable resources (2 marks).

Renewable resources can replenish themselves over time, so they can be used indefinitely provided the rate of consumption does not exceed the rate of natural regeneration. Solar and wind energy, forests and fish stocks are examples.

Non-renewable resources exist in a fixed stock and cannot be replaced within any meaningful timeframe, so every unit consumed permanently reduces what remains. Coal, oil, natural gas and mineral ores are examples.

The distinction matters for intergenerational equity, because non-renewable use necessarily reduces the stock available to future generations, while renewable use need not if it is kept within the regeneration rate.

The qualifier on renewables is what earns the second mark. Renewable resources can be exhausted if over-harvested, which is the tragedy of the commons.

(b) For an economy other than Australia, outline ONE impact of globalisation on its environmental sustainability (3 marks).

Name the economy, because the answer space requires it.

Economy: China. Globalisation drove China's transformation into the world's manufacturing centre, with export-oriented industrialisation from the 1980s attracting foreign investment into energy-intensive heavy industry and manufacturing. Rapid industrial expansion was powered overwhelmingly by coal, and the resulting emissions made China the world's largest total emitter of greenhouse gases and produced severe air, water and soil pollution in industrial regions.

The economic mechanism is that the environmental cost was not priced. Foreign firms relocating production to China faced weaker environmental regulation than at home, so the pollution generated was a negative externality borne by the Chinese population rather than a cost reflected in the price of exported goods. Globalisation therefore did not merely increase pollution in aggregate, it relocated it to where it was cheapest to emit.

Brazil works equally well, using Amazon deforestation driven by soybean and beef exports.

(c) Explain how market-based policies can address market failure in environmental management (5 marks).

The market failure. The price mechanism allocates resources using private costs and benefits only. Where production generates pollution, the cost falls on third parties, so marginal private cost sits below marginal social cost. Price is too low and output too high relative to the socially optimal level, and the market over-produces the polluting good. Market-based policies work by internalising the externality, adjusting prices so that private costs reflect social costs and self-interested decisions produce the socially optimal outcome.

Taxes and charges. A tax on emissions raises the marginal private cost towards the marginal social cost, shifting supply left and reducing output towards the optimum. Producers can respond by cutting output, switching inputs or investing in abatement, whichever is cheapest for them, and consumers substitute towards less damaging alternatives. Australia's carbon pricing mechanism operated on this principle from 2012 to 2014, as does the waste levy on landfill.

Subsidies and rebates work in the opposite direction where a positive externality exists. Because social benefit exceeds private benefit, the market under-provides, and a subsidy raises the private benefit towards the social benefit until provision reaches the optimum. Household solar rebates and feed-in tariffs are the clearest Australian example.

Tradable permits. The government caps total emissions and issues permits that firms may trade. Firms able to abate cheaply do so and sell surplus permits, while firms facing high abatement costs buy permits instead. Abatement therefore concentrates wherever it is cheapest, achieving the environmental target at the lowest total cost to the economy. It also delivers certainty over the environmental outcome, since the quantity is fixed directly, which is the key advantage over a tax.

Why market-based instruments are preferred to regulation. A regulator does not know each firm's abatement costs and cannot set an efficient firm-by-firm standard, whereas a price signal elicits that information automatically through firms' own decisions. Market-based policies also create a continuing incentive to innovate, because every additional tonne abated saves money, while a regulation offers no reward for exceeding the standard.

Their limitation is that setting the correct price requires valuing environmental damage, which involves contested assumptions, and a price set too low fails to change behaviour while one set too high imposes unnecessary cost.

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Question 22 (10 marks): fiscal policy

(a) Explain ONE reason the budget deficit is projected to fall from 2.5% to 2.1% of GDP (2 marks).

Cyclical improvement through the automatic stabilisers. As economic growth strengthens, employment and incomes rise, so income tax and company tax receipts increase while expenditure on unemployment benefits falls. The Budget position improves without any policy decision being taken. Because the deficit is expressed as a percentage of GDP, growth in nominal GDP also reduces the ratio even if the dollar value of the deficit is unchanged.

That final point about the denominator is worth including, because the question expresses the deficit as a ratio. A discretionary explanation, such as spending cuts or tax increases, also earns full marks.

(b) Compare the impact of TWO methods of financing a budget deficit on domestic interest rates (4 marks).

Compare means the two must be set against each other explicitly.

Borrowing from the domestic private sector. The government issues bonds to Australian households, firms and financial institutions, competing with private borrowers for the domestic pool of savings. Increased demand for loanable funds raises their price, so domestic interest rates rise, and the higher cost of borrowing displaces private investment and consumption that would otherwise have occurred. That is the crowding out effect.

Borrowing from overseas. The government issues bonds to foreign investors, drawing on the global pool of savings rather than the domestic one. Because it is not competing with domestic borrowers, there is no upward pressure on domestic interest rates and no crowding out. The capital inflow also increases demand for the Australian dollar, causing an appreciation.

The comparison. Overseas borrowing is clearly superior on the interest rate criterion, since it avoids crowding out entirely. The cost appears elsewhere: it adds to foreign liabilities, and the interest paid overseas is recorded as a net primary income debit, worsening the current account in every future year. It also exposes the government to exchange rate risk where borrowing is denominated in foreign currency, though Australian government debt is issued in Australian dollars, which removes that risk.

A third method, borrowing from the RBA, would increase the money supply and place downward pressure on interest rates, but it is inflationary and is not used in Australia.

(c) Analyse how ONE strategy to reduce the budget deficit could affect income distribution (4 marks).

Choose one strategy and follow it through properly rather than surveying several.

Strategy: reducing government expenditure on transfer payments and social services.

Transfer payments including unemployment benefits, pensions and family payments are means tested, so they are directed almost entirely to low-income households. For those households transfers represent a large proportion of total income, whereas for high-income households they represent almost none. Reducing them therefore takes income disproportionately from the bottom of the distribution, widening the gap between low and high income earners, moving the Lorenz curve away from the line of equality and raising the Gini coefficient.

The effect extends beyond cash income. The social wage, meaning government-provided health, education and housing services, disproportionately benefits low-income households, who could not purchase equivalent services privately. Reducing that spending lowers their real standard of living by more than the dollar saving suggests, and it worsens the distribution of final income by more than the distribution of cash income.

There are further consequences. Low-income households have a high marginal propensity to consume, so reducing their income lowers aggregate consumption and therefore aggregate demand and growth, which partly undermines the fiscal consolidation the strategy was intended to achieve. Reduced spending on education and health also lowers human capital formation among lower-income households, entrenching disadvantage across generations and reducing social mobility.

The contrast worth drawing is that an alternative strategy of raising progressive income taxes would reduce the deficit by a similar amount while improving the distribution rather than worsening it. The distributional consequence therefore depends on which side of the Budget is adjusted, not on consolidation itself.

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Question 23 (10 marks): unemployment, inflation and the NAIRU

(a) How hidden unemployment influences the measurement of the unemployment rate (2 marks).

Hidden unemployment refers to people who want to work and would accept a job but are not actively seeking one, most commonly discouraged workers who have stopped searching after unsuccessful attempts. Because the official definition requires a person to be actively seeking and available for work, these people are classified as outside the labour force rather than as unemployed.

They are therefore excluded from both the numerator and the denominator of the unemployment rate, which means the official rate understates the true extent of joblessness. The effect is largest in a downturn, when discouragement is most common, so the unemployment rate can fall or level off during a weak labour market simply because people have given up searching rather than because they have found work.

(b) How an appreciation of the USD relative to the AUD would affect Australian inflation (3 marks).

Read the direction carefully, because a USD appreciation means an AUD depreciation.

If the US dollar appreciates against the Australian dollar, the AUD has depreciated, so Australians must supply more Australian dollars to buy the same quantity of foreign goods. The domestic-currency price of imports rises.

This raises inflation through two channels. Directly, imported consumer goods enter the CPI at higher prices. Indirectly and more significantly, imported intermediate goods, capital equipment and fuel become dearer, raising production costs for domestic firms, which pass the increase into prices. The result is imported cost-push inflation affecting a wide range of goods, including ones with no obvious import content.

There is a second-round effect. Domestic producers competing with imports face reduced price pressure once foreign substitutes are dearer, so they can raise their own prices too. The depreciation also improves export competitiveness, raising net exports and aggregate demand, which adds demand-pull pressure.

(c) Policy implications at the NAIRU if the aim is to reduce unemployment (5 marks).

The constraint. At the NAIRU, cyclical unemployment has already been eliminated and the economy is operating at capacity. The unemployment that remains is structural and frictional, arising from skills and location mismatches and from normal job search rather than from deficient demand.

Why demand-side policy fails here. Expansionary fiscal or monetary policy raises aggregate demand, but with no spare capacity firms cannot readily increase output, so additional demand bids up wages and prices instead. Any fall in unemployment is temporary: as the short-run Phillips curve shows, unemployment can be pushed below the NAIRU briefly, but once workers and firms revise their inflation expectations the curve shifts and unemployment returns to the NAIRU at a permanently higher rate of inflation. The long-run Phillips curve is vertical, so the government sacrifices price stability and gains nothing durable in employment. Draw both curves if you have time.

What the government must do instead. Reducing unemployment sustainably requires lowering the NAIRU itself, which means supply-side policy:

• Education, training and retraining reduce the skills mismatch, moving workers out of structural unemployment and into the effective labour supply.
• Employment services and better labour market information shorten job search, lowering frictional unemployment.
• Labour mobility measures, including relocation assistance and the recognition of qualifications across jurisdictions, move workers to where vacancies exist.
• Labour market reform linking wages to productivity at the enterprise level allows firms to employ workers whose output would not justify a uniform award wage.
• Microeconomic reform more broadly raises productivity and aggregate supply, increasing the sustainable rate of growth and therefore the derived demand for labour.

The trade-off in the implication. These policies work with long lags and impose short-term costs, since reform itself can raise structural unemployment before it lowers it. The government must therefore accept that no rapid reduction in unemployment is available, and that attempting one through demand stimulus buys inflation rather than jobs.

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Question 24 (10 marks): globalisation and development

(a) How the international division of labour contributes to globalisation (4 marks).

The international division of labour is the allocation of different stages of production to different economies according to their comparative advantage. Rather than one country producing a good from start to finish, each specialises in the stage in which its opportunity cost is lowest: research and design in advanced economies with high human capital, labour-intensive assembly in economies with abundant low-cost labour, and resource extraction where the endowment lies.

How this deepens globalisation. Specialisation of this kind necessarily generates cross-border trade, because a good assembled in one country from components made in three others crosses borders repeatedly before reaching a consumer. Trade volumes therefore rise far faster than final output, which is a direct measure of increased integration.

It also drives the other flows. Allocating production stages internationally requires foreign direct investment to build the facilities, so investment flows follow the division of labour. It creates the transnational corporation as the organising institution, since a single firm coordinating production across several economies is what a global supply chain is. It generates demand for labour mobility, as skilled staff move between operations. And because each economy's output depends on inputs from others, it creates interdependence, which is why a disruption in one country now propagates worldwide, as pandemic supply chain disruption demonstrated.

The mechanism raises world output, because total production from the same resources is higher when each stage occurs where it is cheapest, which is the gain from specialisation applied to production stages rather than whole goods.

(b) Explain TWO reasons why economies experience different levels of economic development (6 marks).

Six marks for two reasons means three marks each, so develop them properly.

Reason 1: institutional quality and political stability.

Development requires long-horizon investment, and firms commit capital only where the returns are secure. Economies with the rule of law, enforceable contracts, secure property rights, low corruption and stable government provide that security, so they attract both domestic and foreign investment, which raises the capital stock, productivity and incomes.

Where institutions are weak, the effects compound. Investors demand a higher risk premium or invest elsewhere, so capital accumulation is slow. Government revenue that could fund health, education and infrastructure is diverted through corruption. Insecure property rights discourage individuals from improving land or starting businesses. Political instability and conflict destroy physical and human capital directly.

This is the factor that mediates all the others, which is why economies with comparable resource endowments and populations can diverge so widely. Botswana and Norway converted mineral wealth into sustained development through strong institutions and sovereign wealth funds, while other resource-rich economies experienced the resource curse, with rents captured by elites, currency appreciation crowding out other tradeable industries, and revenue volatility destabilising the Budget.

Reason 2: human capital and the poverty trap.

Labour productivity determines income per capita, and productivity depends on the education, skills and health of the workforce. Economies with high levels of schooling and good health systems have far more productive workers, can absorb and adapt foreign technology, and can move up the value chain from primary production into manufacturing and services.

Low-income economies face a self-reinforcing constraint. Low incomes generate low domestic savings, so there is little available to invest in the schools, hospitals, clean water and transport that would raise productivity. Poor health reduces both the productivity and the working life of the labour force, and children in poor health or working to support their families do not complete schooling, so the next generation inherits the same disadvantage. Low productivity then produces low incomes, closing the poverty trap.

Human capital is therefore both an input to growth and an outcome of development, which explains why the two move together once the cycle is broken, and why external assistance targeted at health and education can have effects disproportionate to its cost.

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Section III: stimulus-based extended response

Question 25: the continuing role of microeconomic reform in achieving Australia's economic objectives

The stimulus was a December 2014 comment that "there are many areas of the economy that are still in need of reform", naming "the provision of public services in health, education, utilities and transport", warning that "without the motivation to reform that we had in the 1980s, we risk moving too slowly", and adding that on the labour market "it is critical to our future success that we be willing to change where that is sensible". A graph covered 1995 to 2008.

Thesis. Microeconomic reform remains the only instrument capable of raising Australia's sustainable rate of growth, because macroeconomic policy can manage demand but cannot expand capacity. The stimulus identifies the difficulty accurately: the reforms that remain are harder and less popular than those already completed, and the crisis conditions that motivated the reforms of the 1980s no longer exist.

The plan:

1. Define microeconomic policy and the three efficiencies: allocative, technical and dynamic. Identify the objectives being pursued.
2. The record. Tariff reduction from the 1970s and 1980s, financial deregulation and the float in 1983, National Competition Policy from 1995, privatisation and corporatisation of public trading enterprises, labour market decentralisation from 1991, and tax reform including the GST in 2000. Use the graph to show the productivity gains through the period it covers.
3. How reform serves each objective. Growth, through higher productivity raising aggregate supply and the sustainable rate. Price stability, through lower unit labour costs and increased competition. Full employment, through a lower NAIRU, with the qualification that reform raises structural unemployment in the short term. External stability, through improved international competitiveness.
4. Use the stimulus to identify the unfinished agenda, since it names the sectors directly. Health, education, utilities and transport are large, largely publicly provided, and among the least exposed to competitive pressure, which is precisely why reform there is both valuable and difficult. Note that these are also the sectors where measuring productivity is hardest, so gains are less visible than in manufacturing.
5. The labour market, which the stimulus singles out. Further decentralisation, award simplification and enterprise agreement processes. Note the trade-off, because greater flexibility improves productivity and price stability while widening the wage distribution.
6. The motivation problem, which is the heart of the stimulus. The reforms of the 1980s were driven by crisis: a collapsing terms of trade, the 1986 "banana republic" warning, and high inflation and unemployment together. Prosperity removed that urgency, and reform is politically costly precisely when it is least obviously necessary. This is the argument the strongest responses build around.
7. Why the remaining reform is harder. The early gains came from removing protection in a small number of industries with concentrated, identifiable inefficiency. What remains involves services delivered by government to voters directly, where the losers are more numerous and the benefits harder to demonstrate. Declining productivity growth in later years suggests the easy gains have been exhausted.
8. Discussion and judgement. Microeconomic reform remains essential, since Australia's demand-side instruments are near their limits and productivity growth is the only sustainable source of rising income per person. But it is slow, imposes concentrated short-term costs on identifiable groups, requires transitional assistance to be politically sustainable, and cannot substitute for macroeconomic policy in stabilising the cycle. It complements the macroeconomic instruments rather than replacing them.

Question 26: changing sources of economic growth and their effects

The stimulus was a November 2014 statement that "the Australian economy needs to shift to broader sources of growth" and that "a key risk of below-trend growth is that the economy will not generate enough jobs growth to employ new entrants to the labour market", with a graph showing mining, manufacturing, services and total from 2011 to 2012, including a value of −30.

Thesis. Australia's sources of growth have shifted from the mining investment boom towards services and household consumption, and this transition matters for employment because the sectors differ sharply in labour intensity. The risk the stimulus identifies is that the transition is too slow rather than that it fails.

The plan:

1. Define economic growth and identify the sources: the components of aggregate demand, and on the supply side the sectoral composition of output.
2. The mining investment boom and its end. Chinese industrialisation drove record commodity prices and an unprecedented investment phase, which contributed strongly to GDP growth. Use the graph: the sharp negative figure for mining reflects the collapse in investment as major projects completed.
3. The critical distinction. Mining moved from the investment phase to the production phase. Output and export volumes kept rising even as investment collapsed, so mining continued contributing to GDP while contributing much less to employment and to demand for construction and services. Making this distinction explicitly is what separates the top band.
4. Why this creates the employment risk the stimulus names. Mining is capital intensive, generating relatively few jobs per dollar of output, and the construction phase employed far more people than the production phase does. Services are labour intensive, so a shift towards services should generate more employment per dollar of growth. The risk is one of timing: the mining investment fall was rapid while the services expansion is gradual, so a gap opens in which growth runs below trend and employment growth fails to absorb new entrants.
5. The emerging sources. Services, particularly education, tourism, health and professional services, supported by the depreciation of the AUD after 2013 and by rising Asian middle-class demand. Household consumption supported by low interest rates. Dwelling construction. Public infrastructure investment.
6. The effects. On employment, more jobs per unit of growth, but concentrated in different regions and requiring different skills, so structural unemployment rises during the transition, particularly in resource regions such as the Pilbara, the Hunter and Gladstone. On the external accounts, resource export volumes rose even as prices fell, and services exports grew. On the Budget, falling commodity prices reduced company tax and royalty revenue. On distribution, income shifted away from resource regions and towards the services-dominated capital cities.
7. The exchange rate as the mechanism. The depreciation following the terms of trade peak was the automatic adjustment that made the transition possible, restoring competitiveness for services exporters and manufacturers, and this is worth naming as the reason the transition happened at all rather than being engineered.
8. Judgement. The transition was necessary and largely successful, but slower than required to absorb new labour force entrants, which is exactly the risk the stimulus identifies. The deeper problem is that services productivity growth is lower than mining's, so a services-weighted economy grows more slowly in output per worker even when employment recovers.

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Section IV: extended response

Question 27: contributions of international organisations and trade agreements to global growth and development

Discuss means arguing both the contributions and their limitations. The question names two things, organisations and agreements, and two outcomes, growth and development, so all four must appear.

Thesis. International organisations and trade agreements have contributed substantially to global growth by lowering the cost of trade and stabilising the financial system, but their contribution to development has been far more uneven, because the rules were largely written by advanced economies and the sectors most important to developing economies remain the most protected.

International organisations.

• The WTO administers multilateral trade rules, provides dispute settlement that prevents unilateral retaliation, and oversaw the tariff reductions that accompanied the fastest expansion of world trade in history. Limitations: the Doha Round has been stalled since 2008, the Appellate Body ceased functioning in December 2019 when the United States blocked appointments, and agricultural protection, the sector where developing economies hold comparative advantage, remains largely intact.
• The IMF promotes financial stability and lends to economies in crisis, preventing contagion. Limitations: conditionality requiring fiscal consolidation and liberalisation has been criticised for deepening recessions, and voting power is weighted towards advanced economies.
• The World Bank funds long-term development in infrastructure, health and education, with poverty reduction as its objective. Limitations: project delivery depends on the recipient's institutional capacity, and conditions attached have been criticised as intrusive.
• The OECD, G20 and United Nations contribute through research, policy coordination and the Sustainable Development Goals. The G20's coordinated response to the global financial crisis is the clearest instance of coordination preventing a deeper contraction.

Trade agreements.

• Multilateral agreements deliver the largest gains, because concessions extend to all members, but they are the hardest to negotiate.
• Regional and bilateral agreements proliferated as multilateralism stalled: the CPTPP, RCEP, the African Continental Free Trade Area, the EU single market. They lower tariffs, harmonise rules of origin, and cover services and investment that older agreements omitted.
• Their principal cost is trade diversion: preferential access shifts trade towards members and away from more efficient non-members, so a preferential agreement is not the same as free trade. A dense network of overlapping bilaterals also creates administrative complexity that smaller economies are least equipped to navigate.

Contribution to growth. Trade liberalisation raised world output by enabling specialisation according to comparative advantage, and world trade grew faster than world output for decades. The East Asian economies that integrated most deeply grew fastest.

Contribution to development, where the discussion sharpens. Global poverty fell dramatically over the period, and the economies that integrated on favourable terms, including China, Vietnam, Korea and Taiwan, achieved development outcomes without historical precedent. Against that: gains concentrated in economies that already possessed the infrastructure and institutions to exploit market access, the least developed economies were largely left behind, agricultural protection in advanced economies continues to exclude developing-country producers from their strongest sector, and liberalisation widened inequality within many economies.

Judgement. The contribution to aggregate growth is clear and large. The contribution to development is real but uneven, and the unevenness is not accidental: it reflects the fact that the institutions and agreements were designed principally by the economies that benefited most from them. The erosion of the rules-based system over the past decade is nonetheless likely to harm developing economies most, because rules constrain the powerful more than the weak.

Question 28: how macroeconomic policy can be used to achieve external stability

Analyse means drawing out the relationships, so show how the instruments transmit to the external accounts rather than describing each in turn.

Thesis. Macroeconomic policy influences external stability principally by managing aggregate demand, which determines import spending and the savings and investment gap. It is effective against the cyclical component of the current account deficit and largely powerless against the structural component, which is determined by national savings and by the accumulated stock of foreign liabilities.

Set up the framework. Define external stability and its measures: the current account as a share of GDP, net foreign debt and net foreign liabilities as a share of GDP, the debt servicing ratio, the terms of trade and the exchange rate. Then establish the identity that governs the whole answer:

CAD ≡ investment − national savings

Fiscal policy.

• A contractionary stance reduces aggregate demand, and since Australia has a high marginal propensity to import, lower domestic spending reduces import volumes directly, improving the balance on goods and services.
• More fundamentally, a budget surplus is positive public savings. It raises national savings, narrowing the savings and investment gap and reducing the need for foreign capital. This is the most direct instrument available against the structural deficit, and it should be presented as the central point.
• Reduced government borrowing also lowers public foreign debt and future net primary income outflows.
• Limitations: implementation lags tied to the Budget cycle, political resistance to consolidation, and the fact that contraction to improve the external position conflicts directly with growth and employment.

Monetary policy.

• Higher interest rates reduce consumption and investment, lowering import demand and improving the balance on goods and services.
• Higher rates also raise the return on Australian assets, attracting capital inflow. Note the tension carefully, because this worsens external stability on the liabilities measure while improving it on the trade measure: inflow adds to foreign liabilities and future servicing obligations.
• Higher rates cause an appreciation, which reduces export competitiveness and makes imports cheaper, worsening the trade balance but reducing the AUD value of foreign-currency debt through the valuation effect.
• Monetary policy therefore pulls in opposing directions on different measures of external stability, which is the strongest analytical point in the essay.

The exchange rate as automatic stabiliser. Under the float, a deteriorating current account reduces demand for the AUD, and the depreciation restores competitiveness without any policy decision. Explain the J-curve and the Marshall-Lerner condition. This is why external stability requires far less active policy attention than it did under the fixed rate before 1983, when the same adjustment required devaluation, reserves and often a domestic recession.

The limitations, and the judgement.

• Macroeconomic policy addresses the cyclical component of the deficit, driven by domestic demand and the terms of trade, but the structural component arises from the servicing of accumulated foreign liabilities and from the savings shortfall, and demand management cannot reach it.
• The terms of trade is the largest single influence on the current account and is entirely exogenous.
• Conflicts with other objectives are severe, since contraction to improve the external position costs growth and employment.
• The Pitchford thesis argues the deficit is not a policy problem at all where it reflects private borrowing decisions, since borrowers bear the risk and expect a return, which would mean macroeconomic policy should not target external stability directly.

Close on what actually works. The durable improvement in Australia's external position came not from macroeconomic policy but from compulsory superannuation raising national savings over three decades, closing the savings and investment gap sufficiently that Australia recorded its first current account surplus in 44 years in June 2019. Structural policy, not demand management, is what changed the external accounts.

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What to do with this paper

Do it timed and closed-book first. Mark against NESA's published guidelines before reading any of the above, then classify every lost mark as knowledge, verb, data, timing or diagram.

Question 5 is worth a drill on its own. Work through every balance of payments classification question from 2015 onwards and, for each transfer, ask whether it funds a fixed asset or funds consumption. That single question decides between the capital account and secondary income, and it is the most reliably misclassified item in the course.

Related: 2016 worked solutions · 2017 worked solutions · The complete diagram guide · Every formula you need

Questions are described rather than reproduced. The 2015 examination paper and marking guidelines are © NSW Education Standards Authority and are available free from the NESA website. Answers verified against the official marking guidelines; explanations are our own.