IB · ECON HL

Economics HL

Macroeconomics — Unit 3 HL

Name: ____________________Date: October 14, 2026

1.
An economy experiences a fall in business confidence, causing firms to reduce planned investment. (a) Using the concept of the multiplier, explain how this initial fall in investment could lead to a larger fall in national income. (b) State one factor that determines the size of the multiplier.
[4 marks] · no calculator
Marking points
- Explains that the fall in investment reduces the income of workers and firms supplying investment goods.
- Explains that these agents then reduce their own consumption spending, causing a further round of falling income (the multiplier process).
- States that the process repeats through successive rounds of spending, so the eventual fall in national income exceeds the initial fall in investment.
- States a valid determinant of multiplier size, such as the marginal propensity to consume or to withdraw.
Examiner tip: The size of the multiplier rises as the marginal propensity to withdraw falls — more of each round of extra income staying in domestic circulation increases the multiplier.
2.
Marking analysis: A learner attempts the following task: “An economy experiences a fall in business confidence, causing firms to reduce planned investment. (a) Using the concept of the multiplier, explain how this initial fall in investment could lead to a larger fall in national income. (b) State one factor that determines the size of the multiplier.” Their response addresses only this point: “Explains that the fall in investment reduces the income of workers and firms supplying investment goods.” Evaluate the response against the complete 4-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[4 marks] · no calculator
Marking points
- Recognises credit for the stated point: Explains that the fall in investment reduces the income of workers and firms supplying investment goods.
- Identifies the missing requirement: Explains that these agents then reduce their own consumption spending, causing a further round of falling income (the multiplier process).
- Identifies the missing requirement: States that the process repeats through successive rounds of spending, so the eventual fall in national income exceeds the initial fall in investment.
- Identifies the missing requirement: States a valid determinant of multiplier size, such as the marginal propensity to consume or to withdraw.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
3.
In a given year, a country records: household consumption $420bn, gross investment $95bn, government spending $110bn, exports $150bn and imports $130bn. (a) Calculate GDP using the expenditure approach. (b) State the value of net exports. (c) Explain one reason GDP might not accurately reflect the standard of living of the country's residents.
[5 marks]
Marking points
- States net exports = exports − imports = $20bn.
- Uses GDP = C + I + G + (X − M).
- Substitutes the values to obtain GDP = 420 + 95 + 110 + 20.
- Obtains GDP = $645bn.
- Explains a valid limitation, such as GDP ignoring income distribution, non-market or informal activity, or negative externalities such as pollution.
Examiner tip: Calculate net exports first so a sign error there does not propagate through the whole GDP calculation.
4.
Marking analysis: A learner attempts the following task: “In a given year, a country records: household consumption $420bn, gross investment $95bn, government spending $110bn, exports $150bn and imports $130bn. (a) Calculate GDP using the expenditure approach. (b) State the value of net exports. (c) Explain one reason GDP might not accurately reflect the standard of living of the country's residents.” Their response addresses only this point: “States net exports = exports − imports = $20bn.” Evaluate the response against the complete 5-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[5 marks]
Marking points
- Recognises credit for the stated point: States net exports = exports − imports = $20bn.
- Identifies the missing requirement: Uses GDP = C + I + G + (X − M).
- Identifies the missing requirement: Substitutes the values to obtain GDP = 420 + 95 + 110 + 20.
- Identifies the missing requirement: Obtains GDP = $645bn.
- Identifies the missing requirement: Explains a valid limitation, such as GDP ignoring income distribution, non-market or informal activity, or negative externalities such as pollution.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
5.
A country's nominal GDP was $500bn in Year 1 and $560bn in Year 2. The GDP deflator was 100 in Year 1 and 106 in Year 2. (a) Calculate real GDP in Year 2, expressed in Year 1 prices. (b) Calculate the percentage growth in real GDP between Year 1 and Year 2. (c) Explain why using nominal GDP growth alone would overstate the increase in the country's actual output. (d) The country's population grew by 3% over the same period. Calculate the approximate percentage change in real GDP per capita. (e) Comment on what this suggests about the change in average living standards.
[7 marks]
Marking points
- Uses real GDP = (nominal GDP / GDP deflator) × 100.
- Obtains real GDP in Year 2 ≈ $528.3bn (in Year 1 prices).
- Calculates real GDP growth = (528.3 − 500)/500.
- Obtains real GDP growth ≈ 5.7%.
- Explains that part of the 12% nominal GDP growth reflects rising prices (inflation of about 6%) rather than an increase in actual output.
- Approximates real GDP per capita growth as real GDP growth minus population growth, ≈ 5.7% − 3% ≈ 2.7%.
- Comments that average living standards, as proxied by output per person, appear to have risen, but only modestly compared with the headline real GDP growth figure.
Examiner tip: Always convert nominal figures to real figures before comparing growth across years or drawing conclusions about actual output.
6.
Marking analysis: A learner attempts the following task: “A country's nominal GDP was $500bn in Year 1 and $560bn in Year 2. The GDP deflator was 100 in Year 1 and 106 in Year 2. (a) Calculate real GDP in Year 2, expressed in Year 1 prices. (b) Calculate the percentage growth in real GDP between Year 1 and Year 2. (c) Explain why using nominal GDP growth alone would overstate the increase in the country's actual output. (d) The country's population grew by 3% over the same period. Calculate the approximate percentage change in real GDP per capita. (e) Comment on what this suggests about the change in average living standards.” Their response addresses only this point: “Uses real GDP = (nominal GDP / GDP deflator) × 100.” Evaluate the response against the complete 7-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[7 marks]
Marking points
- Recognises credit for the stated point: Uses real GDP = (nominal GDP / GDP deflator) × 100.
- Identifies the missing requirement: Obtains real GDP in Year 2 ≈ $528.3bn (in Year 1 prices).
- Identifies the missing requirement: Calculates real GDP growth = (528.3 − 500)/500.
- Identifies the missing requirement: Obtains real GDP growth ≈ 5.7%.
- Identifies the missing requirement: Explains that part of the 12% nominal GDP growth reflects rising prices (inflation of about 6%) rather than an increase in actual output.
- Identifies the missing requirement: Approximates real GDP per capita growth as real GDP growth minus population growth, ≈ 5.7% − 3% ≈ 2.7%.
- Identifies the missing requirement: Comments that average living standards, as proxied by output per person, appear to have risen, but only modestly compared with the headline real GDP growth figure.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
7.
In an economy, the marginal propensity to consume (MPC) is 0.75, with no taxes or imports to consider. (a) Calculate the value of the multiplier. (b) If planned investment rises by $20m, calculate the resulting change in equilibrium national income.
[3 marks]
Marking points
- Uses the multiplier formula k = 1/(1 − MPC).
- Calculates k = 1/(1 − 0.75) = 1/0.25 = 4.
- Calculates the change in national income = k × ΔI = 4 × $20m = $80m.
Examiner tip: With no taxes or imports, the only leakage is saving, so the multiplier simplifies to 1/MPS, which equals 1/(1 − MPC).
8.
Marking analysis: A learner attempts the following task: “In an economy, the marginal propensity to consume (MPC) is 0.75, with no taxes or imports to consider. (a) Calculate the value of the multiplier. (b) If planned investment rises by $20m, calculate the resulting change in equilibrium national income.” Their response addresses only this point: “Uses the multiplier formula k = 1/(1 − MPC).” Evaluate the response against the complete 3-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[3 marks]
Marking points
- Recognises credit for the stated point: Uses the multiplier formula k = 1/(1 − MPC).
- Identifies the missing requirement: Calculates k = 1/(1 − 0.75) = 1/0.25 = 4.
- Identifies the missing requirement: Calculates the change in national income = k × ΔI = 4 × $20m = $80m.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
9.
In a more realistic economy, the marginal propensity to save (MPS) is 0.4, the marginal rate of tax (MRT) is 0.2, and the marginal propensity to import (MPM) is 0.1. (a) Calculate the value of the multiplier, using all three withdrawals. (b) If government spending increases by $50m, calculate the resulting change in equilibrium national income, to 1 decimal place.
[4 marks]
Marking points
- Uses the multiplier formula k = 1/(MPS + MRT + MPM).
- Sums the withdrawals: 0.4 + 0.2 + 0.1 = 0.7.
- Calculates k = 1/0.7 ≈ 1.43.
- Calculates the change in national income = (1/0.7) × $50m ≈ $71.4m (using the unrounded multiplier).
Examiner tip: Including tax and import leakages always produces a smaller multiplier than the simple 1/MPS formula, since more of each round of extra income now escapes the domestic circular flow.
10.
Marking analysis: A learner attempts the following task: “In a more realistic economy, the marginal propensity to save (MPS) is 0.4, the marginal rate of tax (MRT) is 0.2, and the marginal propensity to import (MPM) is 0.1. (a) Calculate the value of the multiplier, using all three withdrawals. (b) If government spending increases by $50m, calculate the resulting change in equilibrium national income, to 1 decimal place.” Their response addresses only this point: “Uses the multiplier formula k = 1/(MPS + MRT + MPM).” Evaluate the response against the complete 4-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[4 marks]
Marking points
- Recognises credit for the stated point: Uses the multiplier formula k = 1/(MPS + MRT + MPM).
- Identifies the missing requirement: Sums the withdrawals: 0.4 + 0.2 + 0.1 = 0.7.
- Identifies the missing requirement: Calculates k = 1/0.7 ≈ 1.43.
- Identifies the missing requirement: Calculates the change in national income = (1/0.7) × $50m ≈ $71.4m (using the unrounded multiplier).
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
11.
An economy's consumption function is C = 80 + 0.8Y, where C is consumption and Y is national income, both in $bn. (a) State the value of autonomous consumption. (b) State the value of the marginal propensity to consume. (c) Calculate the level of consumption when national income Y = $600bn. (d) Identify, within your answer to (c), the portion of consumption that is induced (income-dependent) rather than autonomous.
[5 marks]
Marking points
- States autonomous consumption = $80bn (the intercept, consumption at zero income).
- States the marginal propensity to consume = 0.8 (the slope).
- Substitutes Y = 600 to calculate C = 80 + 0.8(600).
- Calculates C = 80 + 480 = $560bn.
- Identifies the induced consumption as the $480bn component (0.8 × 600), distinct from the fixed $80bn autonomous component.
Examiner tip: Autonomous consumption does not change with income (the intercept); induced consumption is the MPC multiplied by income (the slope term) — always separate the two when asked to identify components.
12.
Marking analysis: A learner attempts the following task: “An economy's consumption function is C = 80 + 0.8Y, where C is consumption and Y is national income, both in $bn. (a) State the value of autonomous consumption. (b) State the value of the marginal propensity to consume. (c) Calculate the level of consumption when national income Y = $600bn. (d) Identify, within your answer to (c), the portion of consumption that is induced (income-dependent) rather than autonomous.” Their response addresses only this point: “States autonomous consumption = $80bn (the intercept, consumption at zero income).” Evaluate the response against the complete 5-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[5 marks]
Marking points
- Recognises credit for the stated point: States autonomous consumption = $80bn (the intercept, consumption at zero income).
- Identifies the missing requirement: States the marginal propensity to consume = 0.8 (the slope).
- Identifies the missing requirement: Substitutes Y = 600 to calculate C = 80 + 0.8(600).
- Identifies the missing requirement: Calculates C = 80 + 480 = $560bn.
- Identifies the missing requirement: Identifies the induced consumption as the $480bn component (0.8 × 600), distinct from the fixed $80bn autonomous component.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
13.
An economy has the following relationships (all in $bn): C = 100 + 0.8Y, I = 50, G = 70, X = 40, M = 20 + 0.1Y. (a) Write an expression for aggregate demand (AD) as a function of Y, simplifying fully. (b) Using the equilibrium condition Y = AD, calculate the equilibrium level of national income.
[5 marks]
Marking points
- Substitutes AD = C + I + G + (X − M) = (100 + 0.8Y) + 50 + 70 + (40 − (20 + 0.1Y)).
- Collects the constant terms: 100 + 50 + 70 + 40 − 20 = 240.
- Collects the Y terms: 0.8Y − 0.1Y = 0.7Y, giving AD = 240 + 0.7Y.
- Sets Y = 240 + 0.7Y and rearranges to 0.3Y = 240.
- Solves to obtain equilibrium national income Y = $800bn.
Examiner tip: Collect all constant terms and all Y terms separately before setting Y = AD — mixing this step up is the most common source of error in this type of question.
14.
Marking analysis: A learner attempts the following task: “An economy has the following relationships (all in $bn): C = 100 + 0.8Y, I = 50, G = 70, X = 40, M = 20 + 0.1Y. (a) Write an expression for aggregate demand (AD) as a function of Y, simplifying fully. (b) Using the equilibrium condition Y = AD, calculate the equilibrium level of national income.” Their response addresses only this point: “Substitutes AD = C + I + G + (X − M) = (100 + 0.8Y) + 50 + 70 + (40 − (20 + 0.1Y)).” Evaluate the response against the complete 5-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[5 marks]
Marking points
- Recognises credit for the stated point: Substitutes AD = C + I + G + (X − M) = (100 + 0.8Y) + 50 + 70 + (40 − (20 + 0.1Y)).
- Identifies the missing requirement: Collects the constant terms: 100 + 50 + 70 + 40 − 20 = 240.
- Identifies the missing requirement: Collects the Y terms: 0.8Y − 0.1Y = 0.7Y, giving AD = 240 + 0.7Y.
- Identifies the missing requirement: Sets Y = 240 + 0.7Y and rearranges to 0.3Y = 240.
- Identifies the missing requirement: Solves to obtain equilibrium national income Y = $800bn.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
15.
The monetarist/new classical model of the economy draws the long-run aggregate supply (LRAS) curve as a vertical line at the full-employment level of output. (a) Explain why LRAS is drawn as vertical in this model. (b) Explain the implication of a vertical LRAS for the effectiveness of an increase in aggregate demand at achieving a permanent increase in real output in the long run.
[4 marks] · no calculator
Marking points
- Explains that in the long run, wages and prices are assumed to be fully flexible, so output is determined only by the economy's real productive capacity (factors of production and technology), not by the price level.
- States that this full-employment output level is fixed regardless of the price level, giving a vertical LRAS.
- Explains that with a vertical LRAS, an increase in AD shifts the economy rightward along LRAS only temporarily, moving it back to the same full-employment output level once wages and prices fully adjust.
- Concludes that in the long run, an increase in AD raises only the price level (causes inflation) and has no permanent effect on real output.
Examiner tip: This is the key monetarist/new classical critique of demand-management policy: it can only affect real output temporarily, in contrast to the Keynesian view that AD can have lasting real effects.
16.
Marking analysis: A learner attempts the following task: “The monetarist/new classical model of the economy draws the long-run aggregate supply (LRAS) curve as a vertical line at the full-employment level of output. (a) Explain why LRAS is drawn as vertical in this model. (b) Explain the implication of a vertical LRAS for the effectiveness of an increase in aggregate demand at achieving a permanent increase in real output in the long run.” Their response addresses only this point: “Explains that in the long run, wages and prices are assumed to be fully flexible, so output is determined only by the economy's real productive capacity (factors of production and technology), not by the price level.” Evaluate the response against the complete 4-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[4 marks] · no calculator
Marking points
- Recognises credit for the stated point: Explains that in the long run, wages and prices are assumed to be fully flexible, so output is determined only by the economy's real productive capacity (factors of production and technology), not by the price level.
- Identifies the missing requirement: States that this full-employment output level is fixed regardless of the price level, giving a vertical LRAS.
- Identifies the missing requirement: Explains that with a vertical LRAS, an increase in AD shifts the economy rightward along LRAS only temporarily, moving it back to the same full-employment output level once wages and prices fully adjust.
- Identifies the missing requirement: Concludes that in the long run, an increase in AD raises only the price level (causes inflation) and has no permanent effect on real output.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
17.
The Keynesian aggregate supply (AS) curve is typically drawn in three distinct ranges: a horizontal range at low levels of output, an upward-sloping range as output approaches full employment, and a vertical range at full-employment output. (a) Explain why AS is horizontal at low levels of output, referring to spare capacity. (b) Explain why an increase in aggregate demand in the horizontal range has a very different effect on the price level compared with the same increase in the vertical range.
[4 marks] · no calculator
Marking points
- Explains that at low output, there is significant spare capacity (unemployed resources), so firms can increase output by employing idle resources without needing to bid up wages or prices.
- States that this is why AS is horizontal (perfectly elastic) in this range: output can rise with no increase in the price level.
- Explains that in the horizontal range, an increase in AD raises real output substantially with little or no inflation.
- Explains that in the vertical range, all resources are already fully employed, so the same increase in AD cannot raise real output at all and instead raises only the price level (pure inflation).
Examiner tip: The position of the economy on the Keynesian AS curve determines whether demand-side stimulus mainly raises output (horizontal range) or mainly raises prices (vertical range) — the middle upward-sloping range does some of both.
18.
Marking analysis: A learner attempts the following task: “The Keynesian aggregate supply (AS) curve is typically drawn in three distinct ranges: a horizontal range at low levels of output, an upward-sloping range as output approaches full employment, and a vertical range at full-employment output. (a) Explain why AS is horizontal at low levels of output, referring to spare capacity. (b) Explain why an increase in aggregate demand in the horizontal range has a very different effect on the price level compared with the same increase in the vertical range.” Their response addresses only this point: “Explains that at low output, there is significant spare capacity (unemployed resources), so firms can increase output by employing idle resources without needing to bid up wages or prices.” Evaluate the response against the complete 4-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[4 marks] · no calculator
Marking points
- Recognises credit for the stated point: Explains that at low output, there is significant spare capacity (unemployed resources), so firms can increase output by employing idle resources without needing to bid up wages or prices.
- Identifies the missing requirement: States that this is why AS is horizontal (perfectly elastic) in this range: output can rise with no increase in the price level.
- Identifies the missing requirement: Explains that in the horizontal range, an increase in AD raises real output substantially with little or no inflation.
- Identifies the missing requirement: Explains that in the vertical range, all resources are already fully employed, so the same increase in AD cannot raise real output at all and instead raises only the price level (pure inflation).
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
19.
An economy is initially at the natural rate of unemployment with stable, correctly anticipated inflation. The government then unexpectedly increases aggregate demand. (a) Using the short-run Phillips curve (SRPC), explain the initial effect on unemployment and inflation. (b) Explain, using the concept of adaptive expectations, why unemployment is likely to return to its original (natural) rate over time, even though inflation remains higher.
[4 marks] · no calculator
Marking points
- Explains that the unexpected rise in AD moves the economy along the existing SRPC, lowering unemployment below its natural rate and raising inflation above what was anticipated.
- Explains that workers initially experience rising nominal wages and, since they have not yet updated their inflation expectations, mistake this for a rise in real wages, supplying more labour.
- Explains that over time, workers adapt their expectations to the new, higher actual inflation rate and demand correspondingly higher nominal wages.
- Explains that once expectations fully adjust, real wages and unemployment return to their original (natural rate) levels, but now at the new, higher rate of inflation, shifting the SRPC itself upward.
Examiner tip: This is the adaptive-expectations explanation for why the long-run Phillips curve is vertical at the natural rate of unemployment: only unanticipated changes in AD can temporarily move unemployment away from that rate.
20.
Marking analysis: A learner attempts the following task: “An economy is initially at the natural rate of unemployment with stable, correctly anticipated inflation. The government then unexpectedly increases aggregate demand. (a) Using the short-run Phillips curve (SRPC), explain the initial effect on unemployment and inflation. (b) Explain, using the concept of adaptive expectations, why unemployment is likely to return to its original (natural) rate over time, even though inflation remains higher.” Their response addresses only this point: “Explains that the unexpected rise in AD moves the economy along the existing SRPC, lowering unemployment below its natural rate and raising inflation above what was anticipated.” Evaluate the response against the complete 4-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[4 marks] · no calculator
Marking points
- Recognises credit for the stated point: Explains that the unexpected rise in AD moves the economy along the existing SRPC, lowering unemployment below its natural rate and raising inflation above what was anticipated.
- Identifies the missing requirement: Explains that workers initially experience rising nominal wages and, since they have not yet updated their inflation expectations, mistake this for a rise in real wages, supplying more labour.
- Identifies the missing requirement: Explains that over time, workers adapt their expectations to the new, higher actual inflation rate and demand correspondingly higher nominal wages.
- Identifies the missing requirement: Explains that once expectations fully adjust, real wages and unemployment return to their original (natural rate) levels, but now at the new, higher rate of inflation, shifting the SRPC itself upward.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
21.
Using the quantity theory of money, MV = PQ, where M is the money supply, V is the velocity of circulation, P is the price level, and Q is real output. In a given year, the money supply grows by 8%, the velocity of circulation is assumed constant, and real output (Q) grows by 3%. (a) State the approximate percentage change implied for the price level P. (b) Explain the economic significance of this result for a central bank concerned about inflation.
[4 marks]
Marking points
- States the approximate growth-rate version of the equation: %ΔM + %ΔV ≈ %ΔP + %ΔQ.
- Substitutes %ΔV = 0, %ΔM = 8%, %ΔQ = 3%.
- Calculates the implied inflation rate as approximately 8% − 3% = 5%.
- Explains that if the central bank wants to keep inflation lower, it needs to slow money supply growth closer to the rate of real output growth, since excess money growth beyond real output growth translates into inflation.
Examiner tip: The quantity theory of money is the foundation of the monetarist view that inflation is, in the long run, fundamentally a monetary phenomenon caused by money supply growing faster than real output.
22.
Marking analysis: A learner attempts the following task: “Using the quantity theory of money, MV = PQ, where M is the money supply, V is the velocity of circulation, P is the price level, and Q is real output. In a given year, the money supply grows by 8%, the velocity of circulation is assumed constant, and real output (Q) grows by 3%. (a) State the approximate percentage change implied for the price level P. (b) Explain the economic significance of this result for a central bank concerned about inflation.” Their response addresses only this point: “States the approximate growth-rate version of the equation: %ΔM + %ΔV ≈ %ΔP + %ΔQ.” Evaluate the response against the complete 4-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[4 marks]
Marking points
- Recognises credit for the stated point: States the approximate growth-rate version of the equation: %ΔM + %ΔV ≈ %ΔP + %ΔQ.
- Identifies the missing requirement: Substitutes %ΔV = 0, %ΔM = 8%, %ΔQ = 3%.
- Identifies the missing requirement: Calculates the implied inflation rate as approximately 8% − 3% = 5%.
- Identifies the missing requirement: Explains that if the central bank wants to keep inflation lower, it needs to slow money supply growth closer to the rate of real output growth, since excess money growth beyond real output growth translates into inflation.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
23.
Economic development is sometimes measured using a single indicator, such as GNI per capita, and sometimes using a composite indicator, such as the Human Development Index (HDI), which combines income, education and health statistics. (a) Distinguish between a single indicator and a composite indicator of development. (b) Explain one limitation of relying solely on GNI per capita to assess a country's level of development.
[3 marks] · no calculator
Marking points
- States that a single indicator, such as GNI per capita, measures development using one statistic, whereas a composite indicator combines multiple statistics into a single index.
- States that the HDI is a composite indicator, combining income (GNI per capita), education (years of schooling) and health (life expectancy) into a single score.
- Explains a valid limitation of GNI per capita alone, such as it being an average that hides income inequality, or its failure to capture non-income aspects of wellbeing such as health, education, or environmental quality.
Examiner tip: A composite indicator like the HDI was specifically designed to address the criticism that income alone is too narrow a measure of genuine development.
24.
Marking analysis: A learner attempts the following task: “Economic development is sometimes measured using a single indicator, such as GNI per capita, and sometimes using a composite indicator, such as the Human Development Index (HDI), which combines income, education and health statistics. (a) Distinguish between a single indicator and a composite indicator of development. (b) Explain one limitation of relying solely on GNI per capita to assess a country's level of development.” Their response addresses only this point: “States that a single indicator, such as GNI per capita, measures development using one statistic, whereas a composite indicator combines multiple statistics into a single index.” Evaluate the response against the complete 3-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[3 marks] · no calculator
Marking points
- Recognises credit for the stated point: States that a single indicator, such as GNI per capita, measures development using one statistic, whereas a composite indicator combines multiple statistics into a single index.
- Identifies the missing requirement: States that the HDI is a composite indicator, combining income (GNI per capita), education (years of schooling) and health (life expectancy) into a single score.
- Identifies the missing requirement: Explains a valid limitation of GNI per capita alone, such as it being an average that hides income inequality, or its failure to capture non-income aspects of wellbeing such as health, education, or environmental quality.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
25.
Economists distinguish between absolute poverty (being unable to afford a fixed minimum standard of living) and relative poverty (having an income significantly below the average income in a particular society). (a) Explain why strong economic growth is likely to reduce the rate of absolute poverty in a country over time. (b) Explain why the same economic growth might not reduce, and could even increase, the rate of relative poverty.
[4 marks] · no calculator
Marking points
- Explains that economic growth raises average incomes over time, which, if it reaches lower-income households, can lift their income above the fixed minimum threshold that defines absolute poverty.
- States that this can reduce the number of people living below the absolute poverty line, even if income inequality does not change.
- Explains that relative poverty is defined against the average (or median) income of the specific society, which itself typically rises alongside growth.
- Explains that if the benefits of growth are distributed unequally, with higher-income households gaining proportionally more, the income gap (and therefore relative poverty) can widen even as absolute poverty falls.
Examiner tip: Absolute poverty is measured against a fixed threshold; relative poverty is measured against a moving target (average income in that society) — growth can improve one while worsening the other.
26.
Marking analysis: A learner attempts the following task: “Economists distinguish between absolute poverty (being unable to afford a fixed minimum standard of living) and relative poverty (having an income significantly below the average income in a particular society). (a) Explain why strong economic growth is likely to reduce the rate of absolute poverty in a country over time. (b) Explain why the same economic growth might not reduce, and could even increase, the rate of relative poverty.” Their response addresses only this point: “Explains that economic growth raises average incomes over time, which, if it reaches lower-income households, can lift their income above the fixed minimum threshold that defines absolute poverty.” Evaluate the response against the complete 4-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[4 marks] · no calculator
Marking points
- Recognises credit for the stated point: Explains that economic growth raises average incomes over time, which, if it reaches lower-income households, can lift their income above the fixed minimum threshold that defines absolute poverty.
- Identifies the missing requirement: States that this can reduce the number of people living below the absolute poverty line, even if income inequality does not change.
- Identifies the missing requirement: Explains that relative poverty is defined against the average (or median) income of the specific society, which itself typically rises alongside growth.
- Identifies the missing requirement: Explains that if the benefits of growth are distributed unequally, with higher-income households gaining proportionally more, the income gap (and therefore relative poverty) can widen even as absolute poverty falls.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
27.
A country's tax and benefit system includes a progressive income tax and unemployment benefits, which automatically adjust as the economy moves through the business cycle without any new legislation being passed. (a) Identify the term used to describe fiscal tools of this kind. (b) Explain how a progressive tax system and unemployment benefits help to smooth out fluctuations in the business cycle, referring to both a boom and a recession.
[4 marks] · no calculator
Marking points
- Identifies these as automatic stabilisers.
- Explains that during a boom, rising incomes push more taxpayers into higher tax brackets under a progressive system, automatically withdrawing more spending power and moderating the boom.
- Explains that during a boom, falling unemployment reduces total unemployment benefit payments, so less spending power is injected into the economy than would otherwise be, again moderating demand.
- Explains that during a recession, falling incomes automatically reduce tax paid while rising unemployment automatically increases benefit payments, injecting relatively more spending power into the economy and cushioning the downturn, all without any new policy decision.
Examiner tip: Automatic stabilisers work without any new government decision, unlike discretionary fiscal policy, which requires a deliberate change in tax rates or spending levels.
28.
Marking analysis: A learner attempts the following task: “A country's tax and benefit system includes a progressive income tax and unemployment benefits, which automatically adjust as the economy moves through the business cycle without any new legislation being passed. (a) Identify the term used to describe fiscal tools of this kind. (b) Explain how a progressive tax system and unemployment benefits help to smooth out fluctuations in the business cycle, referring to both a boom and a recession.” Their response addresses only this point: “Identifies these as automatic stabilisers.” Evaluate the response against the complete 4-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[4 marks] · no calculator
Marking points
- Recognises credit for the stated point: Identifies these as automatic stabilisers.
- Identifies the missing requirement: Explains that during a boom, rising incomes push more taxpayers into higher tax brackets under a progressive system, automatically withdrawing more spending power and moderating the boom.
- Identifies the missing requirement: Explains that during a boom, falling unemployment reduces total unemployment benefit payments, so less spending power is injected into the economy than would otherwise be, again moderating demand.
- Identifies the missing requirement: Explains that during a recession, falling incomes automatically reduce tax paid while rising unemployment automatically increases benefit payments, injecting relatively more spending power into the economy and cushioning the downturn, all without any new policy decision.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.
29.
A government runs a large budget deficit, financed by borrowing heavily in domestic financial markets, in an attempt to stimulate a weak economy. (a) Explain how this increased government borrowing could raise the equilibrium interest rate in domestic financial markets. (b) Explain how a higher interest rate resulting from this could 'crowd out' private-sector investment, partially offsetting the intended stimulus.
[4 marks] · no calculator
Marking points
- Explains that a large government deficit increases the government's demand for loanable funds in domestic financial markets.
- Explains that with the supply of loanable funds unchanged, this increased demand pushes up the equilibrium interest rate (the 'price' of borrowing).
- Explains that a higher interest rate raises the cost of borrowing for private firms, making some previously profitable investment projects no longer worthwhile.
- Concludes that private investment falls as a result ('crowding out'), which offsets, at least in part, the boost to aggregate demand from the government's own increased spending.
Examiner tip: Crowding out is a key argument against relying heavily on debt-financed fiscal expansion; it is more likely to be significant when the economy is already close to full employment and loanable funds are scarce.
30.
Marking analysis: A learner attempts the following task: “A government runs a large budget deficit, financed by borrowing heavily in domestic financial markets, in an attempt to stimulate a weak economy. (a) Explain how this increased government borrowing could raise the equilibrium interest rate in domestic financial markets. (b) Explain how a higher interest rate resulting from this could 'crowd out' private-sector investment, partially offsetting the intended stimulus.” Their response addresses only this point: “Explains that a large government deficit increases the government's demand for loanable funds in domestic financial markets.” Evaluate the response against the complete 4-mark task. Identify what earns credit and state every additional requirement needed for full marks.
[4 marks] · no calculator
Marking points
- Recognises credit for the stated point: Explains that a large government deficit increases the government's demand for loanable funds in domestic financial markets.
- Identifies the missing requirement: Explains that with the supply of loanable funds unchanged, this increased demand pushes up the equilibrium interest rate (the 'price' of borrowing).
- Identifies the missing requirement: Explains that a higher interest rate raises the cost of borrowing for private firms, making some previously profitable investment projects no longer worthwhile.
- Identifies the missing requirement: Concludes that private investment falls as a result ('crowding out'), which offsets, at least in part, the boost to aggregate demand from the government's own increased spending.
Examiner tip: Treat each marking point as a separate requirement. Do not award the same idea twice, and do not infer work the learner did not show.