ECO2004S Macroeconomics II Comprehensive Study Guide (University of Cape Town Economics Study Guides)

ECO2004S Macroeconomics II is a mid-to-upper undergraduate course that builds on core macroeconomic reasoning by linking aggregate demand and aggregate supply, monetary and fiscal policy, business cycle dynamics, and open-economy macroeconomics. Across South African assessments—especially at universities like the University of Cape Town (UCT)—the exam often tests not only definitions, but also your ability to apply models to policy questions, interpret diagrams, and reason from shocks to outcomes. This study guide focuses on the typical macro tools used in ECO2004S and equips you with structured “how to answer” methods, high-yield derivations, and exam-style practice scenarios aligned with UCT-style economics expectations.

1) ECO2004S Foundations: Macroeconomic Measurement, Model Logic, and How Answers Are Marked

Macroeconomics is about explaining fluctuations in output, employment, inflation, and external balances. ECO2004S usually expects you to start from the national accounting identity and then move to behavioural relationships—households, firms, government, central bank, and the foreign sector—before using these to deduce outcomes under different regimes.

1.1 Core macro identities and interpretation (what the marker wants)

Even when the course focus is “Macroeconomics II,” exams almost always include at least one question that checks whether you can connect macro variables to national accounting.

Key starting points:

• Gross Domestic Product (GDP) is the value of production within the country in a period.
• Expenditure approach (closed economy):
  [
  Y = C + I + G
  ]
  where (C) is consumption, (I) investment, (G) government spending.
• Savings–investment identity (closed economy):
  [
  Y = C + I + G \quad \Rightarrow \quad S = I \quad \text{(where } S \equiv Y – C – T \text{ and } T \text{ is taxes)}
  ]
  This becomes essential when discussing interest rates, crowding out, and financial market effects.

For an open economy, you will typically use:

[
Y = C + I + G + NX
]
where net exports (NX = X – M).

A high-scoring response typically:

1. States the identity cleanly,
2. Explains what an increase in a component does to GDP (and by what mechanism),
3. Connects the mechanism to a macro model (IS–LM, AD–AS, or open-economy version depending on the question).

Example exam-style logic

If a question says: “Government increases (G) by 50 while taxes are unchanged. Explain the expected short-run effect on output and the interest rate.”
A top answer will consider:

• direct demand effect on (Y),
• second-round effects via consumption (depending on whether taxes are lump-sum or distortive),
• the interest rate response depending on whether money supply is fixed or the central bank reacts.

1.2 Real vs nominal variables: inflation and deflators

UCT exams frequently test whether students distinguish:

• Nominal GDP: measured in current prices,
• Real GDP: adjusted for price changes,
• Inflation: typically via an index such as the CPI.

You should be comfortable with:

• The Fisher relation (in its simplest form for exam use):
  [
  i \approx r + \pi^e
  ]
  where (i) is nominal interest, (r) real interest, and (\pi^e) expected inflation.

• The idea of purchasing power and relative price adjustments when nominal exchange rates change (open economy macro).

When explaining policy effects, always decide whether the mechanism is:

• Real (affects output through interest rates, productivity, expectations),
• Nominal (affects price level, nominal wages, exchange rates).

1.3 Short-run vs long-run: sticky prices, sticky wages, and “time horizons”

A classic marking rubric for macro diagrams looks for:

• what is sticky in the short run,
• what adjusts in the long run,
• and whether the policy affects only the level or also the growth rate/trend.

A typical exam expectation:

• In the short run, prices and/or wages are sticky, so policy changes influence real output and employment.
• In the long run, output returns to the natural level determined by fundamentals (technology, labour supply, capital accumulation, institutions), and inflation adjusts.

To score well, you should explicitly mention:

• the “short-run” assumption (e.g., sticky wages/prices),
• the “long-run” anchor (e.g., natural output, potential GDP).

1.4 Shocks: demand shocks vs supply shocks (how to draw consequences)

Questions often ask you to identify the shock and predict macro variables’ directions.

• Demand shock (e.g., fiscal expansion, fall in interest rates, stronger confidence):

  • increases aggregate demand,
  • raises output and (in many models) raises inflation in short run,
  • long run depends on whether inflation expectations shift.

• Supply shock (e.g., oil price increase raising production costs):

  • decreases short-run output,
  • increases price level/inflation,
  • can trigger wage-price dynamics depending on the model.

A high-quality answer uses consistent directional reasoning:

• If costs rise, AS shifts left (in AD–AS),
• GDP falls, inflation rises—unless policy counteracts.

1.5 Exam technique: how to structure macro responses

A well-structured ECO2004S macro answer typically has:

1. State the model/relationship being used (e.g., AD–AS, IS–LM, open economy extension).
2. State assumptions (short-run sticky prices vs long-run flexibility; monetary policy regime).
3. Make the shock/policy change explicit (e.g., increase in (G), decrease in money supply, depreciation).
4. Shift the curve/derive the equation implication (with arrows and explanations).
5. Conclude with predicted directions for:
   • output (Y),
   • price level (P) or inflation (\pi),
   • interest rate (i) or real rate (r),
   • and possibly exchange rate and trade balance (NX).

This blueprint is not filler: it maps directly to how exam rubrics award marks.

2) Aggregate Demand & Supply and Policy: AD–AS, Phillips Curve Logic, and Stabilisation Trade-offs

Macroeconomics II commonly deepens the link between aggregate demand, aggregate supply, and inflation dynamics. Many assessments include diagram-based reasoning and conceptual policy questions about stabilisation.

2.1 AD–AS: core curves and what they mean

In the simplest AD–AS framework:

• Aggregate Demand (AD) relates output to the price level (or inflation expectations) through real interest rates and nominal balances.
• Aggregate Supply (AS) depends on production costs, wages, productivity, and expectations of inflation.

AD reasoning (the demand side)

AD generally slopes downward with respect to the price level because:

• Higher prices reduce real money balances (if nominal money supply is fixed),
• That pushes up real interest rates,
• Which reduces consumption and investment,
• Lowering aggregate demand.

AS reasoning (the supply side)

AS slopes upward in the short run because:

• If wages and some input prices are sticky, a higher price level can increase firms’ willingness to supply more.
• In the long run, output returns to potential (natural output).

A typical exam question asks:

• “How does an increase in the price level affect output in the short run and long run?”
  A high-scoring response states:
• short run: output may deviate from natural level,
• long run: output returns as expectations and wages adjust.

2.2 Shocks and shifts: spending shocks vs cost shocks

Consider two canonical shocks:

1. Fiscal expansion: increase in (G)

   • AD shifts right (for a given price level).
   • Short-run output rises; price level rises.
   • In the long run, output may return to natural output if the model includes full adjustment mechanisms (e.g., via monetary policy reaction or wage/price adjustments).

2. Cost-push shock: e.g., oil price increase

   • AS shifts left/up.
   • Short-run output falls; price level rises.
   • The policy response may depend on central bank reaction function.

Exam-style comparative statics

If the question: “Compare the effects of a fiscal stimulus to a negative productivity shock.”
A strong answer:

• Fiscal stimulus increases demand (AD right),
• Productivity shock reduces supply efficiency (AS left),
• Output moves opposite directions,
• Inflation moves similarly or differently depending on model details:
  • Demand shock: inflation rises due to higher demand pressure,
  • Supply shock: inflation rises due to higher costs.

2.3 Inflation expectations and the short-run Phillips curve mechanism

The course commonly integrates AD–AS with a Phillips curve approach (explicitly or implicitly):

• When unemployment falls below its natural rate, inflation tends to rise.
• Inflation expectations matter: if workers and firms expect higher inflation, the short-run trade-off between unemployment and inflation shifts.

A typical logic chain:

1. A demand expansion reduces unemployment below natural,
2. Inflation rises,
3. Expected inflation updates,
4. The system shifts—so that any sustained output increase becomes harder without further shocks.

In a diagram-based exam, the marker expects you to connect:

• output/unemployment deviation → inflation change,
• expectation updates → curve shift.

2.4 Monetary policy and the stabilization debate

Macroeconomics II usually demands careful thought about the stabilisation problem:

• Short-run policy can reduce output volatility or inflation,
• But policy can also create unintended consequences if expectations adjust or if policy targets conflict.

Two major conceptual points used in exams:

(a) Policy credibility and expectations

If the central bank credibly commits to low inflation:

• inflation expectations are anchored,
• the Phillips curve position is less “unstable,”
• output-inflation trade-offs are improved.

If credibility is low:

• expectations rise,
• the inflation-unemployment trade-off worsens,
• a given stimulus causes larger inflation increases.

(b) Monetary policy transmission

Monetary policy influences:

• interest rates,
• borrowing costs,
• investment,
• consumption,
• exchange rate (in open economy),
• credit conditions.

In many exam responses, you should explicitly mention at least one transmission channel beyond “money supply changes interest rates.”

2.5 A UCT-friendly way to answer policy comparisons

UCT-style economics answers often reward structured comparisons.

If asked: “Should the central bank respond to supply shocks with expansionary policy?”

A sophisticated answer includes:

1. Identify the shock: supply shock (AS left) raises inflation and reduces output.
2. Policy dilemma:
   • Expansionary policy may reduce output fall but increases inflation further if not handled carefully.
   • Tight policy may control inflation but deepen output decline.
3. Expectations and time horizon:
   • Over time, expectations adjust.
   • Policy credibility determines whether inflation can be contained with less output cost.
4. Conclusion:
   • “Optimal” response depends on the central bank’s loss function (inflation vs output stabilisation) and institutional credibility.

This is how you move from textbook narrative to an argument consistent with macro theory.

2.6 Worked conceptual scenario (number-free but model-precise)

Scenario: Oil prices surge due to a geopolitical event. The central bank considers either (A) raising interest rates or (B) cutting rates.

• Under oil shock:
  • AS decreases (costs rise).
  • Output falls; inflation rises.

Option A (tighten):

• AD shifts left (or becomes less expansionary) → output falls further but inflation is contained.
• Expectations may stabilise if the central bank demonstrates anti-inflation commitment.

Option B (ease):

• AD shifts right → output increases relative to option A.
• But because costs are still higher, inflation may rise further or remain high longer, risking unanchored expectations.

A top answer ties the choice to the nature of shock and expectations rather than just “inflation bad, so tighten.”

3) Open-Economy Macroeconomics: Exchange Rates, Trade Balance, Capital Flows, and Policy Under Interdependence

A substantial portion of ECO2004S Macroeconomics II often includes open economy material: exchange rates, net exports, interest parity, and policy in a world where capital flows matter. This section emphasises exam-ready reasoning for South African contexts where exchange-rate volatility is a frequent real-world reference point.

3.1 Exchange rates: what changes when the currency depreciates?

Define clearly:

• The nominal exchange rate (E) can be defined as “rand per dollar” or “dollars per rand.” Consistency matters, but your exam usually focuses on direction.
• In a common macro convention, a depreciation means the domestic currency becomes weaker: imports become relatively more expensive, exports relatively cheaper.

Net exports effect (Marshall–Lerner logic in intuition)

A depreciation tends to improve (NX) by:

• Increasing exports demand (foreigners face lower relative price),
• Reducing import demand (domestics face higher relative price).

However, the response may be:

• delayed (contracts and adjustment costs),
• partial if foreign and domestic demand are inelastic.

This “elasticity + timing” idea can appear even if you’re not explicitly asked for the formula.

3.2 Capital flows and interest parity logic

Open-economy macro in second-year courses frequently uses interest parity relationships, such as:

• Uncovered interest parity:
  [
  i = i^* + \mathbb{E}(\Delta s)
  ]
  where (i) is domestic nominal interest, (i^*) foreign nominal interest, and (\mathbb{E}(\Delta s)) expected change in the exchange rate.

Exam relevance:

• If domestic interest rises relative to foreign, the currency may appreciate in expectation (or future depreciation expected).
• In policy terms, changing interest rates affects the exchange rate via capital flows and expectations.

A high-quality answer will always distinguish:

• short-run interest rate changes,
• expected exchange rate changes,
• and how that impacts net exports.

3.3 Exchange rate pass-through and inflation: a key South African theme

South African macro experiences have highlighted that exchange rate movements can pass through to domestic inflation—especially through:

• imported intermediate inputs,
• consumer prices for imported goods,
• distribution chain costs.

In an exam response, pass-through can be mentioned as:

• exchange rate → import prices → CPI inflation.

When the question asks about inflation after a depreciation, a top answer discusses:

1. immediate price channel via import prices,
2. second-round effects if wages/prices adjust.

Even if the model in the course is simplified, markers often reward you for connecting the model to plausible mechanisms.

3.4 Policy under exchange-rate regimes: fixed vs floating (what to compare)

A frequent exam structure:

• Compare fiscal/monetary policy effects under different regimes.

Floating exchange rate (intuition)

• Monetary policy can affect the exchange rate and interest rates without forcing the central bank to defend a fixed value.
• A fiscal expansion might raise interest rates → attract capital → currency appreciation → partially offset net exports.

Fixed exchange rate (intuition)

• The central bank must maintain the exchange rate, which constrains monetary policy.
• If domestic inflation rises relative to foreign, maintaining the peg can become difficult.
• Under adjustment, reserves can be depleted, forcing contraction.

Exam-ready contrast for a fiscal expansion question

• Under floating exchange:
  1. (G\uparrow) increases AD → output rises short run.
  2. Interest rate rises → appreciation.
  3. Appreciation reduces net exports → dampening output effect.
• Under fixed exchange:
  1. (G\uparrow) still increases output short run.
  2. Interest rate pressure forces policy response to keep exchange rate fixed (often implying money supply adjustments).
  3. Depending on model, the adjustment may lead to output changes less influenced or more complicated.

Write the comparison in a structured way: the question often awards marks for clear regime differences.

3.5 Open economy AD: how (NX) links to the exchange rate in the model

In open-economy AD–AS or IS–LM style reasoning:

• AD includes (NX(e, Y, Y^*)), where (e) is exchange rate.
• Depreciation increases (NX) if elasticities and pricing assumptions support it.
• But if exchange rate changes also influence inflation, real purchasing power and consumption can also shift.

A strong answer:

• states the direction of (NX) change,
• links it to output and inflation,
• mentions potential offsets through interest rate and expectations.

3.6 A consistent integrated scenario (shock → exchange rate → macro variables)

Consider:

• Foreign interest rates rise suddenly (e.g., global tightening).
• Domestic investors now have stronger incentives to hold foreign assets.

Possible macro effects (depending on model assumptions):

1. Domestic interest rate must rise relative to foreign to maintain capital inflows—or else currency depreciates.
2. If the central bank responds by raising domestic interest rates:
   • output may fall (AD left shift),
   • net exports may improve later via depreciation,
   • inflation may be reduced via lower demand, but also increased via pass-through if depreciation still occurs.
3. If central bank instead cuts rates:
   • capital outflow could depreciate currency,
   • depreciation may increase inflation through pass-through,
   • output could initially rise from demand but inflation risk might be high.

An exam marker usually wants the causal chain, not just directional outputs.

3.7 Linking open-economy macro to policy design in South Africa

Even without requiring named case studies, the macro intuition aligns with typical South African policy debates:

• When the rand depreciates, imported inflation can rise.
• The central bank must balance output stability with inflation containment.
• Fiscal dominance concerns can be discussed conceptually:
  • If fiscal policy increases deficits, bond yields may rise,
  • which may pressure the exchange rate and inflation risk.

To keep exam answers coherent, stick to model-consistent language:

• “Exchange rate depreciation raises import prices and can increase inflation,”
• “Higher interest rates can offset depreciation pressures via capital flows,”
• “The net effect depends on the credibility and transmission channels.”

4) Business Cycles, Growth, and the Policy Rule Mindset: From Shocks to Dynamic Adjustment

Macroeconomics II frequently expands from “one-time shifts” to dynamic thinking: how economies respond over time, why cycles happen, and how stabilisation policies affect long-run outcomes.

4.1 Business cycles: stylised facts and what they test

A business cycle question can be conceptual or diagram-based. A typical exam may ask:

• “Explain why unemployment and inflation behave differently over the cycle.”
• “Discuss how output volatility is related to policy credibility.”

Stylised facts often include:

• output fluctuates around a trend,
• investment is more volatile than consumption,
• inflation may be countercyclical or procyclical depending on regime and expectations.

Your answer should not just list facts; it should connect them to mechanisms such as:

• interest rate sensitivity of investment,
• wage rigidity,
• demand expectations.

4.2 Persistence, shocks, and the difference between transitory and permanent effects

A central macro skill is distinguishing:

• transitory shocks: temporary demand changes, short-lived cost shocks,
• permanent shocks: technology shifts, long-lived productivity or institutional changes.

If the shock is transitory:

• output may deviate from potential temporarily,
• inflation may rise or fall,
• and then return.

If the shock is permanent:

• potential output changes,
• the natural level moves,
• long-run relationships shift.

For exam scoring, use language like:

• “Natural output increases/decreases” for permanent productivity changes,
• “Output gap closes over time” for transitory demand shocks.

4.3 Policy rules vs discretionary policy: the credibility dimension

Exams often reward discussion of rule-based monetary policy.

A policy rule mindset includes:

• central bank reacting systematically to inflation and output,
• reducing uncertainty,
• anchoring expectations.

Even if you don’t use a specific Taylor rule equation, you can explain:

• Discretionary policy might stabilise in the short run,
• But if markets doubt future commitment, expectations may shift,
• causing worse inflation outcomes.

A policy rule can:

• improve predictability,
• reduce risk premia,
• lower the cost of inflation stabilisation.

4.4 Fiscal policy dynamics: multipliers, crowding out, and debt constraints

Fiscal policy is not just “(G\uparrow) increases (Y).” ECO2004S often expects you to think about:

• Multipliers: bigger when interest rates are stable or when monetary policy accommodates; smaller if interest rates rise strongly.
• Crowding out:
  • higher government borrowing → higher interest rates,
  • lower private investment.
• Debt sustainability:
  • persistent deficits can raise risk premia,
  • increase inflation pressure in monetised scenarios,
  • alter long-run growth via reduced capital accumulation or risk effects.

Worked conceptual example: deficit increases under floating rates

• Government increases (G).
• Output rises short run.
• Interest rates rise → capital inflows → currency appreciates.
• Appreciation reduces net exports → dampens output.
• Over time, wage/price adjustment may shift inflation upward, and monetary response may follow.

The lesson: fiscal policy affects both the real sector and financial variables.

4.5 Long-run growth vs stabilisation: separating the objectives

A common conceptual trap:

• treating stabilisation policy as if it permanently raises growth.

A strong answer explicitly separates:

• stabilisation: reducing fluctuations around potential,
• growth: raising potential output via productivity, investment, human capital, and institutions.

In exam responses:

• if asked about a demand shock’s long-run effects, state output returns to trend,
• if asked about policy for long-run growth, discuss supply-side levers (even if briefly).

4.6 Counter-arguments: when textbook intuition fails

High marks often come from demonstrating that you understand limitations.

Potential counter-arguments to simplistic claims:

• “Monetary tightening always reduces inflation without harming output.”

  • Counter: if inflation expectations are unanchored, tighter policy may be needed, and the output cost might still be significant in the short run.

• “Depreciation always improves net exports immediately.”

  • Counter: imports may be inelastic (essential intermediate goods), and export volumes may adjust slowly; there can be a trade balance delay effect.

• “Fiscal stimulus always increases output.”

  • Counter: higher interest rates or exchange rate appreciation can offset demand; the multiplier could be smaller than expected.

Including at least one counter-argument earns credibility and shows macro maturity.

4.7 Mini case-study style narrative (institution-anchored but macro-general)

UCT macro students often discuss global episodes (e.g., commodity shocks, global interest rate changes) because South Africa is a commodity-importer/exporter for different categories. Without needing specific dates, the exam skill is:

1. Identify the shock type (demand vs supply; domestic vs external).
2. Predict direction of:
   • inflation,
   • output,
   • currency,
   • interest rates.
3. Then propose policy response and explain trade-offs.

This structure mirrors how real policy committees reason and aligns with exam expectations.

5) Comprehensive Exam Preparation for ECO2004S: Diagram Mastery, Derivations, Question Types, and South African Assessment Readiness

This final section translates theory into exam performance. It focuses on the “how” of answering: diagrams, step-by-step reasoning, common traps, and the kinds of questions typically asked in South African economics exams.

5.1 Diagram toolkit: what to label and how to explain movements

For macro diagrams, always include:

• axis labels and units (e.g., price level vs output, inflation vs unemployment),
• curve names (AD, AS, Phillips curve, etc.),
• direction arrows showing shift or movement,
• short explanation tying the shift to the shock/policy.

AD–AS diagram checklist

When you draw:

• “Fiscal expansion” → AD right,
• “Cost shock” → AS left,
• “Monetary tightening” → AD left (through higher real interest rates / lower demand).

Write a sentence under the diagram:

• “AD shifts right because (G\uparrow) increases aggregate expenditure at each price level, raising short-run output and the price level.”

Markers often award partial marks even if your final numerical result (if any) is missing. Diagram clarity is therefore strategic.

5.2 Phillips curve questions: how to avoid the most common mark-losing mistakes

Common mistakes:

• Treating the Phillips curve as a fixed relationship ignoring expectations.
• Claiming disinflation is painless (no output cost) regardless of model assumptions.
• Forgetting that demand management changes the unemployment-output gap temporarily.

A robust response includes:

• Short run: trade-off exists (unemployment/output gap vs inflation).
• Medium to long run: expectations adjust; policies may need to be sustained for inflation control.
• If the question asks for “policy to reduce inflation,” you should:
  • describe tightening demand,
  • note expectation anchoring,
  • describe output effects as temporary.

5.3 IS–LM / interest-rate market logic: stepwise response patterns

Even if ECO2004S emphasises AD–AS, many macro exams still include interest rate reasoning. When asked something like:

• “What happens to output and the interest rate when money supply falls?”
  Use a stepwise approach:

1. Money supply falls (nominal).
2. Real money balances decrease (for a given price level).
3. Interest rate rises to restore money market equilibrium.
4. Higher interest rate reduces investment and consumption.
5. Output decreases (AD left shift).
6. Then discuss inflation and expectations adjustment if asked.

This step-by-step method reduces logic errors.

5.4 Open-economy questions: net exports and exchange rate decomposition

For an open-economy exam question, your answer should explicitly mention at least:

• direct effect of exchange rate on relative prices,
• indirect effect through inflation (pass-through),
• capital flows and interest parity.

Example structure for “depreciation impact”

1. Depreciation makes exports cheaper and imports more expensive.
2. This tends to increase net exports (NX) (after timing).
3. Higher (NX) increases AD → output rises short run.
4. Pass-through may increase inflation.
5. Inflation and central bank reaction may affect the exchange rate again.

Even if not all effects are simultaneously captured in a single diagram, stating them shows comprehensive understanding.

5.5 High-yield question types in UCT-style macro exams

Below are common exam prompt patterns and how to respond. These are written as templates you can adapt.

Type A: “Explain the effects of policy X on output and inflation.”

Template:

1. Identify policy (fiscal/monetary).
2. Identify the shock channel (AD shift, money market, expectations).
3. Predict short run movements of output and inflation.
4. Predict long run return to natural output.
5. Mention role of expectations/credibility.

Type B: “Distinguish between demand shock and supply shock.”

Template:

1. Define each shock type.
2. Show how each shifts AD and/or AS.
3. Compare predicted directions of output and inflation.
4. Discuss what stabilisation policy should target.

Type C: “Open economy: exchange rate depreciation effects.”

Template:

1. Explain depreciation effect on relative prices.
2. Discuss trade balance response and timing.
3. Add pass-through and inflation implications.
4. Add capital flows and interest rate response.
5. Conclude with net macro impact and conditionality.

5.6 Common trap list (and how to pre-empt them)

Use this checklist during exam revision:

• Trap 1: Mixing real and nominal variables.
  Pre-empt: when interest rate changes are mentioned, ask “real or nominal?”

• Trap 2: Saying long-run effects match short-run.
  Pre-empt: always state what happens after adjustment (natural output, expectations).

• Trap 3: Treating depreciation as always improving net exports.
  Pre-empt: mention elasticities, pass-through, timing, import dependence.

• Trap 4: Ignoring expectations in inflation questions.
  Pre-empt: reference inflation expectations or credibility.

• Trap 5: Diagrams without explanation.
  Pre-empt: write 1–2 sentences linking the shift to economic intuition.

5.7 Intensive practice strategy: turning notes into exam speed

To perform well in macro exams, you need both conceptual accuracy and time efficiency. A high-quality practice plan:

1. Choose 1 topic per day (e.g., fiscal shock, cost shock, depreciation).
2. For each topic, prepare:
   • one paragraph explanation,
   • one diagram,
   • one comparative question (policy vs shock).
3. Do at least two “mixed” questions where you must identify the shock type.

When you rehearse, focus on:

• clarity of assumptions,
• directional correctness,
• and linking micro channels to macro outcomes.

5.8 Course integration: how the sections connect into a coherent exam narrative

ECO2004S Macroeconomics II answers often read best when your narrative connects:

• measurement and identities (Section 1)
  → model reasoning about AD/AS and shocks (Section 2)
  → exchange rate and external balance in policy effects (Section 3)
  → dynamics and credibility/trade-offs (Section 4)
  → the exam execution toolkit (Section 5)

In a real exam, the strongest essays feel like they belong together, not like disconnected paragraphs. The coherence comes from reusing the same logic chain: shock → curve shift → output/inflation → expectations and medium-run adjustments → conditional policy response.

Final Rapid Recall Sheet (last-minute)

• Demand shock: AD shifts right; output up, inflation up (short run).
• Supply/cost shock: AS shifts left; output down, inflation up.
• Policy trade-offs: outcomes depend on expectations, credibility, and regime.
• Open economy: depreciation affects net exports via relative prices, but also can raise inflation via pass-through; capital flows tie exchange rates to interest differentials.
• Long run: output tends to return to natural/potential; inflation adjusts based on expectations and policy persistence.

If you want, share the specific ECO2004S topics your lecturer emphasised (e.g., AD–AS depth vs IS–LM vs Phillips curve vs open economy), and I can convert this into custom exam question sets with full worked model answers in the same UCT-aligned style.