Technique Masterclasses

Paper 4 — The Global Economy

Flashcard Bank

CODEX · WEC14 Flashcard Bank — compiled 2026-09-29. This is a reformatting exercise, not new research. Every card below is a front/back reformat of a sentence, definition, table row or worked calculation that already exists, verified, in this folder's other codex-*.md files: codex-definitions-and-application-bank.md (the source for almost all definition cards), codex-deep-dive-trade-theory-and-comparative-advantage.md, codex-deep-dive-globalisation.md, codex-deep-dive-terms-of-trade-and-trading-blocs.md, codex-deep-dive-balance-of-payments-exchange-rates-and-competitiveness.md, codex-deep-dive-poverty-and-inequality.md, codex-deep-dive-the-role-of-the-state.md, codex-deep-dive-growth-and-development.md, and codex-complete-worked-paper.md (the October 2021 full worked paper). No new claim, statistic, country example or mark-scheme quote has been added — every card's back face is traceable to a real sentence already sitting in one of those nine files, and the citation tag on each card names which file (and, where the source itself carried one, which mark scheme/examiner report) it comes from. Not affiliated with or endorsed by Pearson Edexcel.

Citation convention, inherited unchanged from codex-definitions-and-application-bank.md: [MS: series, Qn] = drawn from a real Pearson mark scheme/examiner report, already verified in research/veridian/WEC14-verified-facts.md and reused via one of this folder's codex files. [spec] = the term is named directly in the spec's own section 4.3 wording. No tag = a standard IAL-Economics-level definition, not itself a mark-scheme quote. [constructed] = an illustrative micro-example one of the deep-dive documents built for teaching purposes, explicitly labelled there as invented figures rather than real country/exam data — reused here at exactly that status, not upgraded to a real citation.

Where a card's back face is a worked calculation, the working is reproduced in full so the card is self-checking, exactly as it appears in its source file.

4.3.1 — Causes and effects of globalisation

Q1. What is globalisation? A. The growing economic interdependence of the world's economies: rising cross-border trade, capital (FDI) flows and migration, and deepening integration of goods, labour and financial markets. [source: definitions bank]

Q2. What is the spec's own headline characteristic-metric for globalisation, and what did it actually do? A. Trade as a % of GDP [spec 4.3.1.1a]. World exports as a % of GDP rose from 20% (1980) to 26.3% (2020) — a real, credited 6.3-percentage-point rise. [MS: June 2025 Q7(a)/(b)]

Q3. What is a transnational corporation (TNC)? A. A firm that owns or controls productive assets (factories, subsidiaries, distribution networks) in more than one country, coordinating production across borders rather than only trading finished goods. [spec 4.3.1.1b]

Q4. What is foreign direct investment (FDI), and how does it differ from portfolio investment? A. A firm or investor in one country acquiring a lasting management interest (conventionally ≥10% of voting equity) in a productive asset or firm in another country; portfolio investment buys financial assets without seeking control. [spec 4.3.1.1b]

Q5. Migration is named as a characteristic of globalisation in its own right — when is it also creditable as a cause? A. Only where the answer explains it as a mechanism (driving further trade, FDI or remittance flows), not merely restated as a characteristic. [MS: Jan 2022 Q8]

Q6. Why is a falling transport/communication cost a genuine cause of globalisation, not merely a correlate? A. A good becomes tradeable exactly once the cross-country price gap for it exceeds the cost of moving it, so a falling transport/communication cost mechanically widens the band of goods for which trade becomes profitable.

Q7. What real, credited example did the January 2022 mark scheme use for "political change" as a cause of globalisation? A. The collapse of the Soviet Union and China's post-1978 opening-up. [MS: Jan 2022 Q8]

Q8. Name the five reasons TNCs undertake FDI. [spec 4.3.1.2b] A. Market access, lower production costs (labour, land, energy), resource access, tariff-jumping (producing inside the target market to avoid an import tariff), and economies of scale across a larger combined output.

Q9. What is "trickle-down" theory, and what is the standard evaluative rebuttal to it? A. The claim that rising top-of-distribution incomes eventually raise incomes throughout it — creditable as KAA, but the same mark scheme's own evaluation band states there is very little evidence it works in practice; pair the claim with its own rebuttal rather than stating it unconditionally. [MS: Jan 2022/Oct 2022]

Q10. What is deglobalisation ("slowbalisation"), and what are its three real credited examples? A. A slowing or reversal of deepening global economic integration. Real credited examples: the Doha trade round stalling since 2001, trading-bloc exit threats/departures, and US–China trade-war "slowbalisation." [MS: Jan 2022 Q8, Eval band]

Q11. What is reshoring, and what real evidence was it credited against? A. A TNC relocating production back toward its home market or shortening its supply chain, typically in response to a shock. Credited example: shipping delays and uncertainty encouraging some TNCs to reshore or simplify their supply chains. [MS: June 2025 Q7(b)]

Q12. Worked calculation — June 2025's Q7(a): world exports were $22.5tn, stated as 26.3% of world GDP. What was world GDP? A. $22.5tn ÷ 0.263 ≈ $85.55tn. The general move this calculation tests: given a part, and that part expressed as a percentage of a whole, find the whole. [MS: June 2025 Q7(a); codex deep-dive: globalisation]

Q13. By how much did global container-shipping volumes rise between 1980 and 2020, and what cause does this figure ground? A. From around 100 million tonnes (1980) to 2 billion tonnes (2020) — roughly a 1,900% increase — real, quantified grounding for falling transport costs as a cause of globalisation. [MS: Jan 2022 Q8 stem]

Q14. Vietnam's FDI example: which country was the largest source of FDI into Vietnam, and roughly how large were those inflows? A. Japan, with inflows from Japan alone reaching around $3.4bn. [MS-consistent, Oct 2024 source booklet]

Q15. Why is Zambia a recurring real illustration of globalisation's benefits and costs sitting inside the same economy at once? A. Zambia's economy and its currency, the kwacha, are heavily exposed to the world copper price — the same openness that supplies export markets and extractive FDI (a benefit) is the identical channel that exposes it to commodity-price and terms-of-trade volatility (a cost). [Oct 2021 source booklet]

Q16. What structural quirk does the October 2022 Q9 mark scheme apply to globalisation's benefits and costs? A. It explicitly allows benefits to be written as the KAA band and costs as the Evaluation band, or the reverse — marks track whichever side is actually developed with reasoning and evidence, not a fixed assignment. [MS: Oct 2022 Q9]

4.3.2.1 — Specialisation and comparative advantage

Q17. What is specialisation? A. A country concentrating its productive resources on a narrower range of goods or services than it consumes, trading for the rest.

Q18. What is opportunity cost, in trade-theory terms? A. The next-best alternative forgone; the quantity of one good given up to produce one more unit of another.

Q19. What is absolute advantage, and why is it not, on its own, the correct basis for specialisation? A. Producing a good using fewer resources (or more output per unit of resource) than another country — but comparative advantage (relative opportunity cost), not absolute advantage, is the correct basis for deciding what to specialise in.

Q20. State the law of comparative advantage. A. A country should specialise in the good for which its opportunity cost is lowest relative to other countries, even with no absolute advantage in anything; mutual specialisation and trade then lets both partners consume outside their own production possibility frontiers (PPF). [spec 4.3.2.1b]

Q21. List the assumptions of the comparative-advantage model. [spec 4.3.2.1b] A. No transport costs, perfectly mobile factors of production between industries, constant opportunity costs (no diminishing returns to specialisation), two countries/two goods, free trade, no externalities.

Q22. For a trade price to produce a genuine gain for both countries, where must it sit? A. Strictly between their two domestic opportunity costs.

Q23. Countries M and N both have an opportunity cost of steel of exactly 0.5 tonnes of textiles. Why does this equality rule out any mutual gain from trade? A. A gain requires a trade price strictly between the two countries' opportunity costs; here that condition asks for a price strictly between 0.5 and 0.5 — an empty interval, satisfied by no price at all. Trading at the one value not excluded (0.5 itself) is the same trade-off each country already faces at home, so the post-trade consumption line coincides with the PPF rather than lying outside it. [codex deep-dive: trade theory, §1, deriving the Jan 2022 Q5 finding]

Q24. Worked schedule — increasing opportunity cost. Given the cloth/wine combinations A(0,30), B(10,26), C(20,18), D(30,0), what is the opportunity cost of the last 10 units of cloth moving from B→C, and from C→D? A. B→C: 0.8 wine per cloth unit. C→D: 1.8 wine per cloth unit (rising from 0.4 wine per cloth unit for A→B) — opportunity cost rises with every step because the schedule is bowed outward, not a straight line. [constructed; codex deep-dive: trade theory, §2]

Q25. At a trade price of 0.8 wine per unit of cloth, is moving from A to C worth doing? Is moving from C to D? A. A→C is worth doing: those units cost at most 0.8 wine each to make at home, exactly what trade can fetch. C→D is not: the last ten units cost 1.8 wine each, nearly triple what trade returns — this is why an increasing-opportunity-cost model predicts partial, not complete, specialisation. [constructed; codex deep-dive: trade theory, §2]

Q26. Why does a constant-opportunity-cost model always predict complete specialisation, while a rising-opportunity-cost model predicts only partial specialisation? A. A constant-cost model has no stopping point because the cost of the good never rises no matter how much is already produced. A rising-cost model predicts specialisation stops once the country's own rising opportunity cost catches up with the world price. [codex deep-dive: trade theory, §2]

Q27. How does Krugman's new trade theory explain real trade between two countries whose opportunity costs are genuinely identical (the exact case where Ricardian theory predicts zero trade)? A. If economies of scale mean no single firm can profitably produce every variety of a good for its own home market alone, firms in each country specialise in a subset of varieties, and trade lets consumers in both countries reach more varieties than either country's producers could support alone — a real gain from trade that survives even in the zero-comparative-advantage case. [codex deep-dive: trade theory, §3]

Q28. What real exam finding does the January 2022 Q5 MCQ illustrate? A. Candidates performed comparatively poorly because the correct answer required recognising the no-comparative-advantage boundary case — when two countries' opportunity-cost ratios are already equal, specialisation and trade have nothing to offer. [MS/ER: Jan 2022 Q5]

Q29. What was named the weakest-answered question of the October 2024 series on this spec point, and why? A. Q4 — candidates were reported unable to read an opportunity-cost table correctly in both directions at once: identifying which country held the lower cost in each of the two goods separately, rather than assuming one country must hold it in both. [ER: Oct 2024 Q4]

4.3.2.2 — Patterns and volume of world trade

Q30. What is the pattern of trade? A. Which goods/services a country exports and imports, and with which partners; shaped by comparative advantage, factor endowments, bloc membership and historical ties.

Q31. How does the volume of trade differ from the value of trade? A. Volume is the total quantity of goods and services traded; value also reflects price.

Q32. What real example did the January 2024 mark scheme credit for "currency wars" shaping trade patterns? A. China's currency controls limiting appreciation, cited as a factor shaping trade patterns via changed relative prices. [MS: Jan 2024 Q9]

Q33. What real example did the January 2024 mark scheme credit for deindustrialisation/ reshoring changing a trade pattern over time? A. Rising labour costs (the mark scheme's own example: China) can drive manufacturing back toward developed economies. [MS: Jan 2024 Q9, Eval]

4.3.2.3 — Terms of trade

Q34. State the terms-of-trade formula. A. ToT index = (export price index ÷ import price index) × 100, both against a common base year. [spec 4.3.2.3a]

Q35. A rise in the terms-of-trade index is conventionally called "favourable" — what does that term actually claim, and what does it NOT tell you? A. It claims each unit exported now buys more imports than before — a price-ratio-only statement. It does not by itself say whether export revenue, the trade balance, or living standards improve, since all three also depend on quantities, not price alone.

Q36. Worked calculation — Year 1: export price index 108, import price index 120. Year 2: export price index 114, import price index 120. What is the ToT index each year, and what is the difference between the point-change and the percentage-change in ToT? A. Year 1 ToT = (108÷120)×100 = 90.0. Year 2 ToT = (114÷120)×100 = 95.0. The rise in index points is 95.0 − 90.0 = 5 points. The percentage change is (95.0−90.0)÷90.0×100 ≈ 5.6% — both describe the same movement, but only one answers "by what percentage did the terms of trade change." [constructed; codex deep-dive: terms of trade, §A3]

Q37. What is the single most-repeated numerical trap on this paper regarding rates like "4% to 3.5%"? A. That is a fall of 0.5 percentage points, not "0.5%," which would describe a much smaller proportionate fall. [QS2]

Q38. List four factors that worsen a country's terms of trade even while making it more price-competitive. A. Rising relative productivity, falling relative unit labour costs, rising relative capital investment, and low relative inflation — all cut export prices. [MS-consistent, per Oct 2023 Q8]

Q39. What happens to a country's own terms of trade when it imposes its own tariff, and via what mechanism? A. It worsens its own terms of trade, because the tariff raises its own import price index directly. [codex deep-dive: terms of trade, §A2, row 9]

Q40. State the Prebisch-Singer hypothesis. A. The terms of trade of primary-commodity exporters tend to worsen over time relative to manufactured-goods exporters, because of the low income-elasticity of demand for primary products. [spec 4.3.2.3b; linked to 4.3.6.2]

Q41. Which real region/context is the Prebisch-Singer hypothesis named directly against? A. Southeast Asian exporters. [MS: June 2023 Q7(e)]

Q42. Real numeric anchor: by how much did Gibraltar's and Greece's terms of trade worsen, 2000–2020? A. Gibraltar's worsened by 44.6%; Greece's worsened by 14.3%. [MS: Oct 2023 Q8]

Q43. What three separate, quantity-sensitive questions does the terms-of-trade impact chain cover, none of which the price index alone can answer? [spec 4.3.2.3c] A. Export revenue (price × quantity, not price alone), living standards (real purchasing power of export earnings), and the balance of trade.

Q44. If a rising terms-of-trade index is driven by a supply-side shortfall (price rises, quantity falls by more), what happens to export revenue, the trade balance, and living standards? A. Export revenue can fall; the trade balance can worsen despite the "favourable" index; living standards can fall. [codex deep-dive: terms of trade, §A5]

Q45. Is the "terms of trade" in a comparative-advantage price-range sense (the price range within which specialisation benefits both countries) the same concept as the terms-of-trade index? A. No — a real mark-scheme bullet on comparative advantage uses "terms of trade" loosely to mean that price range, which is a genuinely different claim from a country's own export-price-to- import-price ratio tracked over time. [MS: Oct 2021 Q9; codex deep-dive: terms of trade, §A6]

4.3.2.4 — Trade liberalisation and trading blocs

Q46. Name the WTO's three credited roles. A. Promoting free trade by reducing tariff/non-tariff barriers; setting the rules of trade; and resolving trade disputes by providing a negotiating forum. [spec 4.3.2.4a] [MS: June 2025 Q7(d)]

Q47. What is a free trade area? A. Members remove trade barriers between themselves but each keeps its own independent external tariff against non-members. [spec 4.3.2.4b]

Q48. What is a customs union, and what is the most commonly dropped half of its definition? A. Free trade between member countries, plus a common external tariff on goods from outside the bloc; both halves are required for full marks — the common-external-tariff half is the one most often dropped. [MS: Jan 2022 Q7(c)]

Q49. What is a common market? A. A customs union plus free movement of labour and capital between member states. [spec 4.3.2.4b]

Q50. What is an economic and monetary union? A. A common market plus a shared currency and (typically) a single central monetary authority. [spec 4.3.2.4b]

Q51. What is trade creation? A. Joining a bloc shifts consumption from a high-cost domestic producer to a lower-cost bloc producer, raising welfare via genuine specialisation by comparative advantage. [spec 4.3.2.4c]

Q52. What is trade diversion? A. Joining a bloc shifts consumption away from a lower-cost outside producer toward a higher-cost inside one (once the external tariff no longer applies internally) — a genuine efficiency loss. [spec 4.3.2.4c] [MS: Jan 2023 Q8, Eval]

Q53. Worked pure-case: a $12 tariff applies to all outsiders. World producer W sells at $30, landing at $42 after tariff — above the domestic cost of $38, so no imports occur pre-union. The country joins a union with bloc partner B, who enters tariff-free at $35. What happened, and is it creation or diversion? A. Buyers switch from the domestic producer ($38) to bloc partner B ($35) — a genuinely higher-cost domestic source replaced by a genuinely lower-cost bloc source. Pure trade creation, no diversion. [constructed; codex deep-dive: terms of trade, §B3]

Q54. Worked pure-case: same $12 tariff. The domestic producer can only supply at $50 (never competitive), so pre-union the market is supplied by world producer W at $25+$12=$37 after tariff. Post-union, bloc partner B enters tariff-free at $32. What happened to the real resource cost of supply, and why does this matter? A. The real resource cost of supplying the good rose, from $25 (W's own cost) to $32 (B's own cost), even though the price domestic buyers pay fell, from $37 to $32 — that gap (real cost rising while the domestic price falls) is why trade diversion is a genuine efficiency loss a consumer wouldn't notice from the price tag alone. [constructed; codex deep-dive: terms of trade, §B3]

Q55. List two benefits and two costs of trading-bloc membership. [spec 4.3.2.4c] A. Benefits: economies of scale, greater bargaining weight (also lower transaction costs, factor mobility where allowed). Costs: trade diversion, loss of independent trade-policy sovereignty (also exposure to other members' shocks, and the largest member dominating the bloc's terms).

Q56. What real trading-bloc scenario anchors this spec point, and what are its credited benefits/costs? A. The UK's 2021 application to join the CPTPP. Credited benefits: economies of scale, greater bargaining weight, an improved current-account position. Credited evaluation: trade diversion, loss of sovereignty over trade policy, risk that the bloc's largest members dictate terms. [MS: Jan 2023 Q8]

Q57. What does the facts bank say about conflicts between trading blocs and the WTO (spec 4.3.2.4d)? A. It is genuinely thin across the sampled archive — no real WEC14 question tests it anywhere in the 14-series archive; flagged as a gap rather than filled with an invented example. [spec 4.3.2.4d]

4.3.2.5 — Restrictions on free trade

Q58. What is a tariff? A. A tax on imported goods, raising their price to domestic consumers and raising government revenue. [spec 4.3.2.5b]

Q59. What is a quota, and how does it differ from a tariff in terms of government revenue? A. A physical limit on the quantity of a good that may be imported over a period; unlike a tariff, does not directly generate government revenue. [spec 4.3.2.5b]

Q60. What is a non-tariff barrier? A. A trade restriction that isn't a price or quantity measure: technical standards, licensing requirements, bureaucracy, or "buy domestic" procurement rules. [spec 4.3.2.5b]

Q61. How does a subsidy work as a restriction on free trade? A. A government payment lowering domestic producers' costs so they can undercut foreign competitors without an explicit import tax. [spec 4.3.2.5b]

Q62. List the six reasons for restricting trade named in the spec. [spec 4.3.2.5a] A. Protecting infant or declining industries, safeguarding employment, correcting a current-account deficit, raising government revenue, retaliation, and non-economic (strategic) reasons.

Q63. On a standard tariff diagram, what happens to consumer surplus, producer surplus, government revenue and deadweight loss when a tariff is imposed? [spec 4.3.2.5c] A. Consumer surplus shrinks; producer surplus rises; government gains revenue on the units still imported; and the deadweight-loss triangles are surplus destroyed, not transferred.

Q64. October 2021 Q4 MCQ verdict table: on a standard tariff diagram, is it true that "government tariff revenue is the area between the two supply curves at the new, restricted import quantity"? A. No — that names the wrong area; tariff revenue is a different, narrower rectangle. The correct statement on that MCQ was that consumer surplus falls by the area between the two prices under the demand curve. [MS: Oct 2021 Q4]

Q65. What specific distinction did the October 2021 examiner report name nationally as under-taught on the tariff diagram? A. The consumer-surplus/producer-surplus distinction specifically. [ER: Oct 2021]

4.3.3.1 — Balance of payments

Q66. What does the current account record? A. Trade in goods and services, primary income (wages, investment income) and secondary income (remittances, aid). [spec 4.3.3.1a]

Q67. What do the capital and financial accounts record, and what identity links them to the current account? A. Cross-border capital transfers and (mainly) financial-asset flows (FDI, portfolio investment, reserves, "hot money"); by the balance-of-payments identity, a current-account deficit is matched by a net capital/financial-account inflow, and vice versa. [spec 4.3.3.1a]

Q68. Define a balance-of-trade deficit and surplus. A. Deficit: value of imports exceeds value of exports, i.e. (X − M) is negative. Surplus: value of exports exceeds value of imports, i.e. (X − M) is positive — reversing these two paired definitions under pressure is a well-evidenced, recurring error type. [MS: June 2024 Q7(b)]

Q69. Classification drill: a UK pharmaceutical firm receives a dividend from its overseas subsidiary. Which account, and why? A. Current account, primary income — a return on a past investment, not the investment itself. [codex deep-dive: BoP, Part 1]

Q70. Classification drill: a worker abroad sends money home to family. Which account, and why? A. Current account, secondary income — nothing is expected back. [codex deep-dive: BoP, Part 1]

Q71. Classification drill: a UK conglomerate buys a 60% controlling stake in an overseas manufacturer. Which account, and why? A. Financial account, FDI — a controlling, lasting interest. [codex deep-dive: BoP, Part 1]

Q72. Classification drill: a UK pension fund buys a 2% non-controlling stake in that same overseas manufacturer's shares. Which account, and why — and what does this pair show about the FDI/portfolio boundary? A. Financial account, portfolio investment. Same country, same firm — the FDI/portfolio line runs on degree of control, not on destination. [codex deep-dive: BoP, Part 1]

Q73. Classification drill: a G7 government cancels a low-income country's outstanding debt. Which account, and why? A. Capital account — a capital transfer, not a financial-asset flow (the small residual category). [codex deep-dive: BoP, Part 1]

Q74. List four causes of a current-account deficit. [spec 4.3.3.1b] A. An overvalued real exchange rate, weak relative competitiveness (productivity, unit labour costs), strong domestic demand pulling in imports, structural commodity dependence.

Q75. What is the mirror-image cause of a current-account surplus to an overvalued exchange rate? A. An undervalued or highly competitive real exchange rate, holding export prices low abroad. [codex deep-dive: BoP, Part 2, deriving spec 4.3.3.1b's own "deficits/surpluses" wording]

Q76. What real, verified essay tests causes of a current-account surplus specifically? A. January 2023 Q9, "Evaluate possible causes of a current account surplus," referred to a developed country of the candidate's choice, carrying the identical developed-country gate as the equivalent competitiveness essay. [MS: Jan 2023 Q9]

Q77. Name the two policy types used to reduce a current-account imbalance. [spec 4.3.3.1c] A. Expenditure-switching policies (depreciation/devaluation, tariffs) shifting demand between domestic and foreign goods, and expenditure-reducing policies (contractionary fiscal/monetary policy) cutting import demand generally.

Q78. Give the mark scheme's own exact two-part definition of the "foreign currency gap," and the confirmed common error in answering it. A. "Currency inflows are less than (1) currency outflows (1)." The confirmed real trap is answering with only half of it — most often explaining it "in terms of lack of foreign currency reserves" alone, capped at 1 mark. [MS/ER: Oct 2023, Q7(b)]

Q79. Worked micro-example: a country's currency inflows total $80bn (export earnings, foreign investment, remittances); its outflows total $95bn (import spending, profit repatriated, capital sent overseas). What is the foreign currency gap, and what must cover it? A. $15bn — the amount that must be covered by running down reserves, external borrowing, or attracting fresh capital inflow. [constructed; codex deep-dive: BoP, Part 3]

4.3.3.2 — Exchange rates

Q80. Define a fixed, a managed, and a floating exchange rate. [spec 4.3.3.2a] A. Fixed: pegged to another currency/basket, with a government commitment (typically via reserves) to defend it. Managed: floats within a government-influenced range rather than a hard peg or a free float. Floating: set by market supply and demand, with no official target the government defends.

Q81. List three tools a government uses to intervene in the FX market. [spec 4.3.3.2b] A. Direct buying/selling of the domestic currency using reserves, interest-rate changes to attract or discourage capital inflows, and quantitative easing (which tends to weaken a currency).

Q82. List four factors influencing a floating exchange rate. [spec 4.3.3.2c] A. Relative interest rates (hot-money flows), relative inflation/purchasing power parity, the current-account balance, underlying economic strength (also capital flight, speculation, global/contagion factors).

Q83. Distinguish revaluation from appreciation. A. Revaluation: a deliberate government decision to raise a fixed/managed currency's official value. Appreciation: a market-driven rise in a floating currency's value. Same direction, different cause and regime. [spec 4.3.3.2d]

Q84. Distinguish devaluation from depreciation. A. Devaluation: a deliberate government decision to lower a fixed/managed currency's official value. Depreciation: a market-driven fall in a floating currency's value. [spec 4.3.3.2e]

Q85. State the Marshall-Lerner condition. A. A devaluation/depreciation improves the trade balance in the long run only if the sum of the price elasticities of demand for exports and imports exceeds 1 (PEDx + PEDm > 1). [spec 4.3.3.2f]

Q86. Which real country and commodity exposure is the Marshall-Lerner condition directly named against? A. Zambia's kwacha and its copper-price exposure. [MS: Oct 2021 Q7(e)]

Q87. What is the J-curve? A. The short-run pattern after a devaluation/depreciation: the trade balance typically worsens before it improves, because the price effect is immediate while the volume response lags as buyers and supply chains adjust. [spec 4.3.3.2f]

Q88. Worked calculation — Country Q devalues its currency by 15%. Exporters report export quantity demanded rises 9%; importers report import quantity demanded falls 6%. Using the exact price-effect relationship (a devaluation of d raises the domestic-currency import price by d/(1−d)), what are PEDx and PEDm, and does the Marshall-Lerner condition hold? A. Foreign-currency export price falls by exactly 15%; domestic-currency import price rises by 0.15/0.85 ≈ 17.6%. PEDx = 9%÷15% = 0.6. PEDm = 6%÷17.6% ≈ 0.34. Sum ≈ 0.94 — just short of the Marshall-Lerner threshold, so Country Q should expect the same partial-recovery pattern as a below-threshold case. [constructed; codex deep-dive: BoP, Part 7]

Q89. Trace the transmission chain from rising domestic inflation to currency depreciation via the interest-rate channel. A. Rising domestic inflation relative to trading partners → by purchasing power parity, the currency's real value erodes, creating depreciation pressure on the nominal rate → if the central bank does not raise interest rates enough to compensate → the interest-rate differential against other currencies narrows or reverses → hot money exits, reinforcing the depreciation. [codex deep-dive: BoP, Part 5, built on the real Turkey lira 2018–2020 source-booklet context, MS: Jan 2022]

Q90. What is competitive depreciation/devaluation? [spec 4.3.3.2g] A. Deliberately weakening a currency for export-price advantage, risking retaliatory devaluations ("currency wars").

Q91. What real, counter-intuitive finding did the October 2024 mark scheme credit about Japan's national debt and its currency? A. Japan's national debt exceeding 230% of GDP has not prevented yen appreciation, because underlying economic strength can outweigh short-term macroeconomic management. [MS: Oct 2024 Q10, Eval band]

Q92. What did a separate real evaluation point state about the current account's importance relative to capital flows for many developing countries? A. The current account is "relatively minor" next to capital-flow-driven depreciation for many developing countries. [MS: Oct 2023/Oct 2024]

4.3.3.3 — International competitiveness

Q93. Define relative unit labour costs, and state why it combines two things rather than one. A. Wage cost ÷ output per worker, compared internationally — combines wage levels and productivity rather than either alone. [spec 4.3.3.3a]

Q94. List four factors influencing international competitiveness. [spec 4.3.3.3b] A. Relative productivity/unit labour costs, the exchange rate, relative inflation (also taxation, input/energy costs, regulation, non-price factors like quality, branding, innovation).

Q95. By how much was New Zealand's productivity rate below the average of other advanced economies in 2020? A. 40% lower. [MS: June 2022 Q9]

Q96. What genuinely distinct evaluative point did the June 2022 Q9 mark scheme credit about goods- versus services-sector competitiveness? A. Goods- and services-sector competitiveness "are unlikely to be the same as the competitiveness of a country's services" — a single verdict about "a country's competitiveness" risks averaging over two genuinely different stories, since most advanced economies' output is dominated by services rather than goods. [MS: June 2022 Q9]

Q97. Give a short illustrative reason a country's manufacturing sector could be highly price-competitive while its services sector is not, at the same time. A. Heavy capital investment and automation can raise manufacturing output per worker faster than wages rise, giving genuine price-competitiveness in traded goods; the dominant services sector (retail, hospitality, most business/public services) is typically far more labour-intensive, with productivity much harder to raise. [constructed; codex deep-dive: BoP, Part 9]

4.3.4.1 — Poverty

Q98. Define absolute poverty. A. Unable to meet the basic necessities of life (food, clean water, shelter) against a fixed real threshold, adjusted only for inflation; can in principle fall to zero. [spec 4.3.4.1a] [MS: Oct 2024 Q7(b)]

Q99. Define relative poverty, and state the single most-evidenced definitional failure attached to it. A. Income below a stated fraction of the current median (60% of median is the common policy convention); "income below the median" alone is not a valid definition, since exactly half of any population sits below its own median by construction. Only 6% of candidates scored full marks on this definition. [MS: Jan 2021 Q7(c)]

Q100. In an economy with a median household income of $1,000/month, an absolute poverty line of $400/month, and a relative poverty line of $600/month, can a household be below the absolute line but above the relative line? A. No — because $400 < $600, anything under $400 is automatically under $600 too. Whenever a country's relative line sits above its absolute line, the population in absolute poverty is always a subset of the population in relative poverty. [constructed; codex deep-dive: poverty and inequality, §1.1]

Q101. Name the three measures of poverty. [spec 4.3.4.1b] A. Headcount ratio (share below a threshold), poverty gap (average shortfall below it), multidimensional measures combining income with health/education deprivation.

Q102. Worked calculation — 10 households, poverty line $500. Five start below it: three "near-poor" ($490, $470, $450) and two "deep-poor" ($100, $50). A flat $60 transfer is paid to all five. What happens to the headcount ratio, and what happens to the poverty gap ratio? A. Headcount ratio falls from 5/10 (50%) to 2/10 (20%) — a 60% proportional fall, as the three near-poor households cross the line. Poverty gap ratio falls from 940/5,000 (18.8%) to 340+390 over 5,000 (14.6%) — only a 22% proportional fall, because the deep-poor pair were never close enough to the line for $60 to lift them out. [constructed; codex deep-dive: poverty and inequality, §1.2]

Q103. List the seven spec-named causes of a change in poverty. [spec 4.3.4.1c] A. Economic growth (if shared), education/training, welfare provision, tax-system structure, structural economic change, aid, civil war/conflict.

Q104. Give the mark scheme's two independently creditable routes to defining the Gini coefficient, from a real WEC14 mark scheme. A. "A numerical representation / statistical measure / index to measure income inequality/distribution in a country" OR "Area A / Area (A + B) with an accurately labelled and drawn Lorenz curve" — a bare verbal definition is explicitly creditable on its own, without ever mentioning the Lorenz curve. [MS: Oct 2021 Q7(c)]

4.3.4.2 — Inequality

Q105. Distinguish income inequality from wealth inequality. [spec 4.3.4.2a] A. Income inequality: unevenness in the distribution of income (a flow). Wealth inequality: unevenness in the distribution of wealth (a stock); typically more uneven than income, and compounds over time.

Q106. What is a Lorenz curve? [spec 4.3.4.2b] A. Cumulative share of income/wealth plotted against cumulative share of population, poorest to richest; perfect equality is the 45° line, and the further the curve bows from it, the more unequal the distribution.

Q107. State the Gini coefficient formula and its range. [spec 4.3.4.2b] A. Area A (between the line of equality and the Lorenz curve) ÷ Area (A + B) (the whole area under the line of equality); ranges 0 (perfect equality) to 1 (perfect inequality). [MS: Oct 2021 Q7(c)]

Q108. Name six real, credited causes of income inequality within a country. [MS: Jan 2024 Q8] A. Wage differentials by skill/training, the education earnings premium, top-1% income gains, pension/final-salary erosion, tax-rate changes, globalisation widening the skilled/unskilled gap (also low-wage immigration, weakened trade-union power, deregulation/privatisation, benefit cuts, unemployment, and the 2020–2022 health crisis's uneven impact by age).

Q109. What real developed-country pair anchors the paper's richest inequality-causes essay? A. Sweden and the USA, rising income inequality, 2007–2022. [MS: Jan 2024 Q8]

Q110. List four causes of inequality between countries. [spec 4.3.4.2c] A. Differences in factor endowments, access to capital/technology, trade patterns, institutional quality (also historical development paths).

Q111. What is the key distinction between what a free market "allocates" and what it "distributes"? [spec 4.3.4.2f] A. The free market allocates resources by price and profit signals and rewards factor ownership, but does not itself correct the resulting distribution — what a market allocates and what it distributes are separate questions.

Q112. Are "causes of poverty" and "causes of inequality" the same list? A. No — genuinely different censuses answering different questions (share of a population under a threshold vs the shape of the whole distribution). Civil war/conflict is a poverty-list item with no equivalent on the inequality list; pension provision and monopoly/monopsony power are inequality-list items with no direct poverty equivalent. [codex deep-dive: poverty and inequality, §1.4]

4.3.5.1 — Public expenditure

Q113. Distinguish capital expenditure from current expenditure and transfer payments. [spec 4.3.5.1a] A. Capital expenditure: spending on long-lived assets (infrastructure, hospitals, schools) raising long-run productive potential (shifts LRAS). Current expenditure: recurrent spending (wages, running costs) that doesn't raise long-run capacity but matters for near-term demand. Transfer payments: payments (pensions, benefits) made without a corresponding good/service produced in return; redistribute rather than directly buy output.

Q114. Distinguish financial crowding out from resource crowding out. A. Financial: government borrowing competes for the same pool of loanable funds, raising interest rates and reducing private investment. Resource: government spending directly competes with the private sector for the same finite factors of production, independent of any interest-rate effect.

Q115. By how much did Italy's public expenditure rise as a share of GDP, 2002–2022? A. From 47.1% to 56.7% of GDP. [MS: June 2025 Q10]

Q116. Worked micro-example: an economy has GDP of £1,000bn and spending at 40% of GDP (£400bn), funded by tax revenue at 35% (£350bn) plus £50bn borrowing. Government raises spending to 45% (£450bn) and wants the extra £50bn funded entirely by tax revenue. What does closing that gap require, and why isn't the required tax-rate rise a free choice? A. Tax revenue must rise from 35% to 40% of GDP — but how far the tax rate itself must rise depends on where the current rate sits relative to the revenue-maximising Laffer rate t*: the closer to t*, the more of any rate rise is eaten by the shrinking tax base, so the same revenue target requires an ever-larger rate rise with an ever-smaller share reaching government; past t*, no rate rise can close the gap at all. [constructed; codex deep-dive: role of the state, §1.3]

4.3.5.2 — Taxation

Q117. Distinguish direct tax from indirect tax. [spec 4.3.5.2a] A. Direct: levied directly on income, profit or wealth (income tax, corporation tax), paid directly by whoever it is levied on. Indirect: levied on spending (VAT, excise duty), collected by a seller but ultimately borne (in part) by the buyer via a higher price.

Q118. Distinguish progressive, proportional and regressive tax by how the average rate moves with income. [spec 4.3.5.2b] A. Progressive: average rate rises as income rises. Proportional: average rate stays the same at every income level. Regressive: average rate falls as income rises.

Q119. Worked example: a flat income tax of 20% with no tax-free threshold is applied to £10,000, £50,000 and £200,000 of income. What is the average rate at each level, and why does this show a genuinely proportional tax? A. £2,000, £10,000 and £40,000 — 20% at every level, because with no threshold the marginal rate on every pound earned is the same 20% the average rate converges to. [constructed; codex deep-dive: role of the state, §2]

Q120. New Zealand's flat 4-cents-per-litre fuel-duty rise was tested as which tax category, and why? A. Regressive — a fixed amount per litre takes a larger share of a lower-income consumer's budget than a higher-income consumer's, for the same litre purchased; the flat-per-unit structure, not the direction of the change, decides the category. [MS/ER: Oct 2021 Q2]

Q121. Explain the Laffer curve's two boundary conditions. A. Revenue is zero at a 0% tax rate (nothing collected) and at a 100% rate (the tax base itself collapses); revenue rises over some range and falls over another, so a rate already above the revenue-maximising point can be cut with revenue rising, and raising it further can cut revenue rather than raise it. [MS: Oct 2023 Q7(e)]

Q122. Which real countries anchor a Laffer-curve essay in this course's material? A. Ghana's proposed 35% top marginal income-tax rate (Jan 2025), and Pakistan's income-tax rise on high earners (Oct 2023). [MS: Jan 2025 Q7(a)/Section C; MS: Oct 2023 Q7(e)]

Q123. List the economic effects of a tax-rate change. [spec 4.3.5.2c] A. Incentives to work, tax revenue (via the Laffer relationship), income distribution, output/employment, the price level, the trade balance, FDI flows.

4.3.5.3 — Public sector borrowing and debt

Q124. Distinguish a fiscal deficit from national debt. A. Fiscal deficit: spending exceeds tax revenue in a given period (a flow). National debt: the accumulated stock of all past deficits (less surpluses) still owed; frequently confused with the deficit itself under exam pressure. [spec 4.3.5.3a]

Q125. Distinguish automatic stabilisers from discretionary fiscal policy. A. Automatic stabilisers: tax revenue and welfare spending that rise/fall with the cycle without a new policy decision, smoothing the cycle automatically. Discretionary policy: a deliberate decision to change spending or tax rates. [spec 4.3.5.3a]

Q126. Distinguish a structural deficit from a cyclical deficit. A. Structural: the part of the deficit that persists even at full/potential output; does not close on its own. Cyclical: the part attributable to output being below potential; closes automatically as the output gap narrows. [spec 4.3.5.3a]

Q127. List four factors influencing the size of deficits/debt. [spec 4.3.5.3b] A. The economic cycle, discretionary decisions, interest rates on existing debt, external shocks.

Q128. Worked micro-example: a government has an existing debt stock of £2,000bn, serviced at an average rate of 3% (a £60bn/year bill). If the average rate rises to 5% on the same stock, what is the new debt-servicing bill, and what is the "debt spiral" risk if the extra cost is itself borrowed? A. The bill rises to £100bn/year — an extra £40bn representing no new hospital, school or road built. If that extra £40bn is itself borrowed rather than funded by higher tax or lower spending, it pushes the debt stock — and next year's interest bill — higher still. [constructed; codex deep-dive: role of the state, §3.3]

Q129. What real, Pearson-credited counter-example shows debt significance is not just about the raw size of the stock? A. Japan's national debt of over 230% of GDP has not prevented an appreciation of its currency — a large debt stock, serviced in the country's own currency, that the market has not treated as an unconditional weakness. [MS: Oct 2024 Q10]

Q130. How does capital flight worsen a developing country's debt-servicing burden specifically (beyond the savings/foreign-currency gaps)? A. It reduces the domestic tax base — precisely the T side of the G − T budget balance — meaning a country that borrows relatively more in foreign currency and sees capital flight faces a debt-servicing burden structurally harder to manage than the same nominal debt-to-GDP ratio would be for a developed economy borrowing in its own currency. [MS: Jan 2022 Q10]

4.3.5.4 — Macroeconomic policies

Q131. Distinguish fiscal policy from monetary policy. [spec 4.3.5.4a] A. Fiscal: using government spending/taxation to influence demand, the deficit/debt, or resource allocation. Monetary: using interest rates, the money supply or QE to influence demand, inflation and the exchange rate.

Q132. What is supply-side policy? [spec 4.3.5.4a] A. Measures raising productive capacity (education, infrastructure, deregulation) rather than managing demand.

Q133. How did the demand-side policy response to the 2008 financial crisis work? [spec 4.3.5.4b] A. Coordinated expansionary fiscal policy and monetary policy (rate cuts toward zero, then QE) used together internationally.

Q134. What is transfer pricing? [spec 4.3.5.4c] A. A TNC setting artificial prices between its own subsidiaries specifically to shift reported profit into lower-tax jurisdictions.

Q135. List the three named problems facing policymakers. [spec 4.3.5.4e] A. Inaccurate/incomplete information, genuine risk and uncertainty, and an inability to control external shocks.

4.3.6.1 — Measures of economic development

Q136. What three components make up the Human Development Index, in the Pearson Getting Started Guide's own simple account? A. Health (life expectancy), education (mean/expected years of schooling), and income (GNI per capita, PPP-adjusted) — three equal weights, each ranked on a 0-to-1 index. [Getting Started Guide, per codex deep-dive: growth and development, Part 1]

Q137. What is HDI's stated limitation, in the same simple Pearson account? A. It "does not take account of inequality, poverty or other measures of deprivation." [Getting Started Guide, per codex deep-dive: growth and development, Part 1]

Q138. List two other measures of development beyond HDI. [spec 4.3.6.1c] A. % of adult male labour in agriculture, access to clean water (also energy consumption per capita, internet/mobile access per 1,000 people, doctors per 1,000 people).

Q139. Worked calculation — dependency ratio. A country has 55m people aged 0–14, 30m aged 65+, and 165m of working age. What is the dependency ratio? A. (55 + 30) ÷ 165 × 100 ≈ 51.5 — for every 100 working-age people, roughly 51–52 dependants to support. [constructed; codex deep-dive: growth and development, Part 2]

Q140. In the same country, if a sustained low-birth-rate policy shrinks the 0–14 group to 35m while the 65+ group grows to 50m (working-age population roughly unchanged), what happens to the headline dependency ratio, and what real shift does it mask? A. The ratio stays arithmetically similar, (35+50)÷165×100 ≈ 51.5 — but the dependency is now concentrated on the pension/healthcare side rather than the education side, a distinct fiscal pressure from the one the same headline number showed before. [constructed; codex deep-dive: growth and development, Part 2]

Q141. What real, named policy is credited as a cause of an ageing-population constraint? A. China's one-child policy. [Getting Started Guide, per codex deep-dive: growth and development, Part 2]

4.3.6.2 — Constraints on growth and development

Q142. What is a savings gap, and what does the Harrod-Domar model say it constrains? A. Low domestic savings constrain investment, which constrains capital accumulation and growth; can stem from low GDP per capita, debt-servicing, capital flight, or an absence of inbound FDI. [MS: Jan 2022 Q10]

Q143. What is the Harrod-Domar model's own stated limitation, per the Pearson Getting Started Guide? A. "It focuses on physical investment only and ignores other sources of investment" — human capital investment, R&D and institutional "investment" all sit outside a savings-ratio-and- capital-output-ratio formula entirely. [Getting Started Guide, per codex deep-dive: growth and development, Part 2]

Q144. What is capital flight, and what two gaps does it worsen? A. Individuals/firms move savings out of domestic banks into foreign banks or assets, worsening both the savings gap and the foreign-currency gap and reducing the domestic tax base. [MS: Jan 2022 Q10]

Q145. What is the Chile counter-example to the Prebisch-Singer hypothesis? A. "Chile has benefited from the production of copper... and also on other primary products with a high income elasticity of demand, such as blueberries and papaya" — the opposite of the low-income-elasticity premise Prebisch-Singer's hypothesis generally assumes for primary products. [Getting Started Guide, per codex deep-dive: growth and development, Part 2]

Q146. Name three non-economic constraints on growth. [spec 4.3.6.2b] A. Corruption, poor governance, civil war/conflict (also migration of skilled workers/"brain drain," terrorism) — each disrupting investment, institutions or the labour force independent of a purely economic mechanism.

Q147. What is the Lewis dual-sector model's mechanism? A. Surplus labour moves from a low-productivity traditional/agricultural sector to a higher-productivity industrial sector, raising output without necessarily raising agricultural wages until the surplus is absorbed. [spec 4.3.6.3c]

Q148. State two real, Pearson-sourced limitations of the Lewis model. A. "This model may be inappropriate for some emerging economies, where there are often many unemployed in urban areas," and "this theory also assumes that secondary-sector production would be labour-intensive, whereas it is often capital-intensive." [Getting Started Guide, per codex deep-dive: growth and development, Part 4]

4.3.6.3 — Measures to promote growth and development

Q149. Name the six market-orientated strategies. [spec 4.3.6.3a] A. Trade liberalisation, FDI promotion, subsidy removal, privatisation, floating the exchange rate, and microfinance — unified by one diagnosis: a government-imposed distortion suppressing capacity already present.

Q150. Name the six interventionist strategies. [spec 4.3.6.3b] A. Human-capital investment, protectionism (infant-industry), managed exchange rates, infrastructure investment, joint ventures with TNCs, and buffer stock schemes — unified by the opposite diagnosis: a genuine market failure the private sector will not resolve alone.

Q151. How does a buffer stock scheme work, and what four problems does it face, per the Pearson Getting Started Guide? A. A price ceiling and floor: if price drops too low, the authority buys and stores the surplus; if too high, it releases stored stock. Problems: storage is expensive, transport to/from storage is expensive, it is very difficult to equate supply and demand in the long run, and all producers need to be part of the scheme for it to be effective. [Getting Started Guide, per codex deep-dive: growth and development, Part 3]

Q152. Worked micro-example: a buffer-stock authority sets a floor of $80/tonne and a ceiling of $120/tonne. A bumper harvest would push the free-market price to $65/tonne; a later drought would push it to $145/tonne. What does the authority do each time? A. In the bumper-harvest year, it buys enough surplus to hold the price at the $80 floor, adding to storage. In the drought year, it releases stored tonnage until the price falls back to the $120 ceiling — smoothing producer income but paying storage and transport costs along the way. [constructed; codex deep-dive: growth and development, Part 3]

Q153. Which real Himalayan kingdom taxes tourists heavily per night specifically to address tourism's negative externalities? A. Bhutan. [Getting Started Guide, per codex deep-dive: growth and development, Part 4]

Q154. What real 1980s–90s historical event explains why debt relief exists as a strategy at all? A. Many developing countries hit a "debt crisis" as they could not afford interest on large debts to international financial institutions — a combination of rising interest rates and a rising US dollar (most loans were dollar-denominated); Latin American and African countries were among the worst hit, and Mexico defaulted first. [Getting Started Guide, per codex deep-dive: growth and development, Part 4]

Q155. Name the real KAA channels and real evaluation counterweights for debt relief. [MS: June 2021 Q9] A. KAA channels: freed funds for poverty reduction, closing the savings/foreign-currency gaps, infrastructure and human-capital investment, environmental debt-for-nature swaps. Evaluation counterweights: dependency culture, moral hazard, dependency theory, corruption, IMF/World Bank conditionality.

Q156. What are TNCs explicitly NOT, for the purposes of spec 4.3.6.3d's "international institutions"? A. International institutions — the spec point names the World Bank, the IMF and NGOs, and this distinction is frequently flipped or conflated under exam pressure. [spec 4.3.6.3d]

Q157. Give the World Bank's role, per the Pearson Getting Started Guide. A. Granting reconstruction loans to war-devastated countries; granting developmental loans to underdeveloped countries; providing loans for agriculture, irrigation, power, transport, water supply, education and health; encouraging industrial development by promoting economic reforms. [Getting Started Guide, per codex deep-dive: growth and development, Part 4]

Q158. Give the IMF's role, per the Pearson Getting Started Guide. A. To ensure the stability of the international monetary system, to maintain stability and prevent crises through a formal surveillance system reviewing country/global economic and financial developments, and to provide member countries with finance to correct balance-of-payments problems. [Getting Started Guide, per codex deep-dive: growth and development, Part 4]

Q159. What characterises an NGO's approach to development, per the Pearson Getting Started Guide? A. "Local control of small scale projects, self-reliance, an emphasis on using the skills available and environmental sustainability." [Getting Started Guide, per codex deep-dive: growth and development, Part 4]

Q160. Which real country is the mark scheme's own example of microfinance correctly classified as market-orientated, and against which contrasting interventionist example? A. Niger (HDI 0.35 in the real MCQ stem), contrasted against Mali's interventionist human-capital strategy. [MS: Oct 2021 Q3 MCQ]

From the complete worked paper (October 2021) — real MCQ traps, reformatted

Q161. France's public expenditure fell from 57.2% to 55.6% of GDP (2014–2019). What is the likely impact on crowding out, and why are the other three options wrong? A. Crowding out falls — a smaller state competes less with the private sector for the same pool of loanable funds and resources. (Not unemployment rising, injections rising, or inflationary pressure rising — a smaller AD injection cuts, not raises, each of those.) [MS: Oct 2021 Q1]

Q162. New Zealand raised fuel tax by a flat 4 cents per litre. What tax category is this, and what is the confirmed candidate error? A. Regressive — a fixed amount per litre takes a larger share of a lower-income consumer's budget. "Many confused this for either direct or progressive tax," treating a rate rise as automatically progressive rather than checking the flat-per-unit structure. [MS/ER: Oct 2021 Q2]

Q163. Niger's HDI is 0.35, the world's lowest. Which of buffer-stock schemes, state investment in human capital, state investment in infrastructure, or microfinance promotion is market-orientated, and why did candidates struggle? A. Microfinance — private lenders, not the state, extend credit in response to a missing formal credit market. The other three are all state-run and so interventionist; many candidates picked buffer stocks and "got confused with interventionist strategies." [MS/ER: Oct 2021 Q3]

Q164. Austria's terms-of-trade index (base year 2000 = 100) declined gradually to the mid-80s by 2018. What does that imply about export and import prices, and why? A. Import prices rose faster than export prices (relative to each other) — a falling ToT index (export price index ÷ import price index × 100) by construction means the numerator (exports) is losing ground to the denominator (imports). [MS: Oct 2021 Q5]

Q165. The Netherlands' Global Competitiveness Index rank rose from 6th to 4th (2018–2019), attributed to a rise in labour productivity. What is the combined effect on unit labour costs and export prices? A. Both fall — higher output per worker for the same wage bill lowers the cost per unit produced, letting a firm hold or cut its export price while protecting margin. [MS: Oct 2021 Q6]

Q166. Zambia's base interest rate rose by 1.75 percentage points to reach 11.5% by November 2019. What was it in April 2019, and what is the trap in this calculation? A. 11.5% − 1.75% = 9.75%. The trap is direction, not arithmetic: because the rate rose to 11.5%, the earlier figure must be lower, so the two numbers subtract rather than add — reversing the direction (giving 13.25%) earns no marks despite correct-looking working. [MS: Oct 2021 Q7(a)]

Q167. Using Zambia's fourth extract paragraph, what two Knowledge-mark routes and what two Application-mark data points does the mark scheme accept for "explain what is meant by the Gini coefficient"? A. Knowledge (any two): a numerical/statistical measure of income inequality/distribution; the Area A ÷ Area (A+B) ratio with an accurately labelled Lorenz curve; a value near 0 signals equality, near 1 signals inequality. Application (both needed): income inequality described as very high by international standards; Zambia's Gini coefficient in 2018 was 0.50. Many candidates gave only the formula and stopped, capped at 1 mark. [MS/ER: Oct 2021 Q7(c)]

Q168. What two decisive traps did the October 2021 Q7(d) examiner report name for "examine two problems Zambia's economy faces from copper dependence"? A. Copying the extract earns Application marks but not Analysis marks — restating a fact is not reasoning a step forward from it. Proposing a solution earns nothing under Evaluation — the question asks candidates to examine problems, not recommend a fix. [MS/ER: Oct 2021 Q7(d)]

Q169. What command-word trap did the October 2021 Q10 examiner report name for "evaluate the disadvantages of a current-account deficit"? A. "Those who mentioned causes of a current account deficit did not attain any marks" — the question asks for disadvantages, and an answer explaining why a deficit arises rather than what it costs scores zero, however economically sound the causal reasoning is. [MS/ER: Oct 2021 Q10]

Q170. What paper-level warning did the October 2021 examiner report give about naming a country in a Section C essay? A. "Just writing a country name in the answer does not merit as application" — a country reference only counts if it is actually used in the reasoning. [ER: Oct 2021]

Coverage note

This bank draws on all nine codex-*.md files in this folder and spans all six spec sub-sections (4.3.1 through 4.3.6) plus one section of real MCQ/Section-B traps reformatted from the October 2021 complete worked paper. No card was added once the nine source files' real, traceable content for a given point was exhausted — several thin spec sub-points (e.g. 4.3.2.4d "conflicts between trading blocs and the WTO," 4.3.4.2d "impact of inequality," 4.3.5.1b "reasons for changing expenditure") are covered by exactly the definitions the source files state and no invented mark-scheme detail, consistent with those files' own "genuine gaps flagged" sections. 170 cards total.