Ekonomie 114 (Economics 114) Exam Notes

Ekonomie 114 (Economics 114) is typically an intermediate undergraduate economics module that builds core analytical tools and applies them to real-world policy and market outcomes. Exam questions often test (i) your ability to interpret graphs and economic models, (ii) your understanding of incentive mechanisms and equilibrium reasoning, and (iii) how macroeconomic or policy shocks translate into measurable outcomes like output, inflation, employment, and welfare.

These notes are written for South African students and emphasize how you can connect theory to contexts that frequently appear in local exams—such as inequality, unemployment, energy and trade constraints, fiscal policy trade-offs, and the role of exchange rates in an open economy. The guide is structured to help you revise systematically: first the economic foundations and modelling logic, then key microeconomic and market-equilibrium concepts (including market failures), then macroeconomic frameworks and policy, and finally exam-style problem-solving strategies and worked mini-examples.

Section 1: Foundations of Economic Thinking in Ekonomie 114

What Ekonomie 114 Exams Usually Assess

In South African university economics exams for courses at the “114” level, you should expect a blend of conceptual and quantitative tasks. Common question patterns include:

• Define and explain key terms (e.g., elasticity, opportunity cost, externalities, comparative advantage).
• Interpret a diagram (e.g., supply–demand shifts, tax incidence, monopoly outcomes, AD–AS or IS–LM-like reasoning depending on the syllabus).
• Derive or compute results from given data (e.g., elasticity from price and quantity changes, welfare triangles, unemployment and participation relationships).
• Apply theory to a specific scenario (e.g., “What happens to imports when the rand depreciates?” or “How do subsidies affect output and prices?”).
• Evaluate policy trade-offs (e.g., fiscal stimulus vs inflation; tariffs vs consumer costs; interest rate policy vs unemployment).

A key exam skill is making a claim that follows logically from the model assumptions. For instance, saying “a tax reduces consumption” is incomplete unless you explain who bears the burden, how much the equilibrium price changes, and why the magnitude depends on elasticities.

Opportunity Cost, Trade-offs, and Efficiency

Most introductory economics collapses “efficiency” into “produces the most,” but Ekonomie 114 tends to emphasize more rigorous definitions:

• Efficiency often refers to outcomes that cannot make someone better off without making someone worse off (Pareto efficiency).
• Economic efficiency in markets depends on whether marginal benefits (MB) equal marginal costs (MC) for socially relevant costs and benefits.
• When there are externalities, the private MB and MC used by households and firms diverge from social MB and MC.

A frequent exam move is to compare:

• Private equilibrium: where private MB = private MC.
• Social optimum: where social MB = social MC.

Example: External Cost of Pollution

Suppose a factory’s production creates pollution costing households and nearby businesses. Without regulation, the firm produces where:

• Private marginal cost (MPC) equals marginal benefit (MB) (or where price equals MPC in perfect competition).

But the social marginal cost (MSC) is higher because MSC includes the external damage. Socially optimal output is lower:

• Where SMB = SMC (and since SMC > MPC at each output level, the output is reduced relative to the private equilibrium).

On an exam, you should be comfortable explaining why a tax equal to marginal external damage can “restore” incentives so that firms internalize external costs.

Marginal Thinking and Elasticity as a Bridge to Policy

Elasticity often appears because it determines how strongly quantities respond to price or income changes. The two elasticities most used in exam questions are:

• Price elasticity of demand
  [
  E_d=\frac{%\Delta Q_d}{%\Delta P}
  ]
• Price elasticity of supply
  [
  E_s=\frac{%\Delta Q_s}{%\Delta P}
  ]

The sign convention differs: demand elasticity is typically negative, but many exams use absolute value. Use what your lecturer uses—but if you’re unsure, compute magnitudes carefully and interpret the sign as “direction” only.

Why Elasticities Matter for Taxes (Deadweight Loss & Incidence)

When a per-unit tax is introduced, both consumers and producers face higher effective prices. The incidence depends on elasticities:

• More inelastic side bears more burden.
• Deadweight loss is larger when demand and supply are both relatively elastic because quantities adjust more away from the efficient outcome.

A strong exam answer includes:

1. Which curve is more elastic (flatter vs steeper).
2. How the tax “wedges” the price between what consumers pay and what firms receive.
3. The welfare implications: tax revenue vs deadweight loss.

Equilibrium Reasoning: Markets, Shocks, and Comparative Statics

Ekonomie 114 exams love comparative statics—changes in equilibrium due to shifts in determinants. Your reasoning should follow a consistent algorithm:

1. Identify the initial equilibrium (where relevant curves intersect).
2. Decide what changes (technology, preferences, income, costs, expectations, policy).
3. Determine which curve shifts and in which direction.
4. Predict the direction of price and quantity changes using the slopes/elasticities.
5. Check for ambiguous cases and explain the conditions for unambiguous outcomes.

Mini-Example: Fuel Subsidy Removal

If a government removes a fuel subsidy, firms face higher input costs:

• Supply shifts left/up.
• Equilibrium price rises and quantity falls.
  If demand is inelastic, price rises more and quantity falls less—so the welfare and inflation consequences can still be large.

Models as Tools, Not Reality: Assumptions You Must State

Exams often penalize vague statements like “it will lead to economic growth.” A better approach is to link mechanisms:

• In competitive markets, prices transmit information; in imperfect competition, market power distorts outcomes.
• In open economies, exchange rates connect domestic and foreign prices; trade volumes adjust based on income and substitution effects.
• In macro frameworks, the response depends on whether the economy is supply-constrained or demand-constrained.

Whenever you make a claim, you should anchor it:

• Short run vs long run
• Nominal vs real variables
• Market vs economy-wide equilibrium

Section 2: Microeconomics and Market Outcomes (Competition, Monopoly, and Market Failure)

Perfect Competition vs Real-World Market Structures

A classic exam question contrasts perfect competition with other structures:

• Perfect competition: many buyers and sellers, homogeneous products, price takers, free entry.
• Monopoly: one seller, no close substitutes, downward-sloping demand for the firm.
• Monopolistic competition / oligopoly: partial competition with product differentiation or strategic interaction.

Even if your syllabus focuses heavily on general microeconomic mechanisms, Ekonomie 114 often expects you to apply reasoning to policy debates relevant to South Africa—such as affordability in telecoms, pricing in fuel markets, or competition policy.

Monopoly and Market Power: Graphs and Welfare Implications

For monopoly, the firm chooses quantity where:

• MR = MC (marginal revenue equals marginal cost).

Then it sets price from the demand curve:

• P > MC and often also P > MR due to downward-sloping demand.

Key welfare results:

• Allocative inefficiency: monopoly output is below the competitive level where P = MC.
• Deadweight loss: there is a range of mutually beneficial trades that do not occur.

Exam Diagram Checklist for Monopoly

When asked to “explain with a diagram,” ensure your diagram includes:

1. Demand curve (D) (and market demand).
2. Marginal revenue curve (MR) below demand.
3. Marginal cost curve (MC).
4. Profit-maximizing quantity (Q_m) at (MR = MC).
5. Corresponding monopoly price (P_m) on demand.
6. Competitive output (Q_c) at (P = MC) (if relevant).
7. Welfare triangles: deadweight loss between (Q_m) and (Q_c).

A top-grade answer doesn’t merely label points—it explains the logic:

• Monopoly restricts output to increase price, which yields higher producer surplus but lower consumer surplus and total surplus.

Price Discrimination: When It Can Raise Total Surplus

If the syllabus includes price discrimination, you should know:

• First-degree (perfect): each consumer pays their willingness to pay; can mimic efficient allocation (socially close to perfect competition) but involves redistribution.
• Second-degree: nonlinear tariffs or quantity discounts; more common in practice.
• Third-degree: different prices for different groups based on elasticities.

Third-degree discrimination leverages the rule:

• The firm sets different prices such that groups with more inelastic demand are charged higher per-unit markups.

A high-quality exam response states conditions:

• Market power exists.
• Arbitrage/resale is limited (separation of markets).
• The firm can observe consumer group membership or set self-selection mechanisms.

Taxes and Incidence: Who Really Pays?

A frequent exam question asks about:

• Consumer vs producer incidence of a tax.
• Changes in equilibrium price and quantity.
• Revenue collected by the government.
• Deadweight loss and efficiency effects.

How to Answer Incidence Questions Step-by-Step

1. Draw demand and supply.
2. Show the tax as a wedge between consumer price (P_c) and producer price (P_p).
3. Determine the new equilibrium quantity (Q_t).
4. Measure/compute:
   • Tax revenue (TR = t \times Q_t).
   • Consumer burden: difference between pre-tax and post-tax consumer price times quantity demanded.
   • Producer burden: difference between pre-tax and post-tax producer price times quantity supplied.
5. Explain: burden depends on elasticities.

Concrete Numerical Mini-Scenario

If demand is relatively inelastic and supply is relatively elastic, then:

• Consumers pay a larger share of the tax.
• Quantity decreases modestly.
• Deadweight loss is relatively smaller compared to a case where both sides are elastic.

Make sure your final narrative always ties back to elasticity.

Subsidies and Indirect Welfare Effects

Subsidies can improve outcomes or create inefficiency depending on whether the market failure is addressed.

• For positive externalities (e.g., education, vaccination), subsidies can increase output toward the socially optimal level.
• For negative externalities, subsidies can worsen external damage and increase total inefficiency unless paired with corrective policies.

Example: Education Subsidy and External Benefits

If education creates social benefits beyond private returns (e.g., improved civic participation), then:

• Private demand for education is too low relative to social optimum.
• A subsidy shifts effective demand upward, moving the equilibrium toward the social optimum.

In an exam answer, include:

• The difference between private marginal benefit and social marginal benefit.
• How the subsidy changes decision-making.
• The potential fiscal cost and whether it generates the intended outcome given administrative constraints.

Market Failure: Externalities

Externalities are among the most examinable microeconomic topics. You must cover:

• Negative externality: social marginal cost exceeds private marginal cost.
• Positive externality: social marginal benefit exceeds private marginal benefit.
• Instruments:
  • Pigouvian taxes for negative externalities.
  • Pigouvian subsidies for positive externalities.
  • Tradable permits as a market-based alternative.
  • Regulation (direct limits).
  • Liability/Coasean bargaining (if conditions allow).

Coase Theorem: What Conditions Matter?

Students often quote Coase Theorem too broadly. A strong answer includes:

• Bargaining is possible at low transaction costs.
• Property rights are well-defined.
• Parties can identify the relevant stakeholders and negotiate.
• Outcomes may be efficient regardless of initial rights, but distribution depends on who holds rights.

When bargaining costs are high or external damage diffuse across many individuals (typical of pollution), Coasean solutions are less practical, increasing the role of taxes/permits.

Public Goods and Free Riding

Another core market failure is public goods:

• Non-excludable: hard to prevent access.
• Non-rival: one person’s consumption doesn’t reduce availability to others.

The exam logic:

• Because individuals don’t bear the full marginal cost of their consumption, they underprovide public goods (free-rider problem).
• Government intervention may provide or fund the good.

Example Contextualized to South Africa

Consider street lighting or public health campaigns:

• If individuals can benefit without paying, private provision is unlikely to be efficient.
• Government financing can be necessary, but governance quality affects outcomes.
  This is the kind of policy reasoning that earns marks: you connect the model to institutional reality.

Asymmetric Information and Market Failures (Adverse Selection & Moral Hazard)

If your syllabus includes information economics, you should master the logic:

• Adverse selection: before a transaction occurs—hidden information leads to selecting worse-quality participants.
• Moral hazard: after a transaction—hidden actions change behavior because risk is shifted.

Example: Insurance

• With adverse selection, high-risk individuals are more likely to buy insurance.
• With moral hazard, insured individuals may take more risks because they are not fully responsible for outcomes.

Policy tools:

• Screening (for adverse selection)
• Incentive-compatible contracts, deductibles, and monitoring (for moral hazard)

A high-score answer explains the mechanism and why “just let the market work” may fail due to informational structure.

Section 3: Macroeconomics Essentials—Output, Inflation, Unemployment, and Policy Trade-offs

The Macro “Big Picture” in Exams

Even in an exam that includes micro, Ekonomie 114 often expects macro competence: the ability to connect shocks to macro indicators and to explain trade-offs clearly.

Core macro variables include:

• Output (real GDP)
• Inflation (price level changes)
• Employment/unemployment
• Interest rates
• Fiscal stance (taxes and government spending)
• Money supply / monetary policy
• External sector (imports, exports, exchange rates)

Your answers typically need both:

• Direction of change (what happens to output/inflation/employment)
• Mechanism (why it happens via aggregate demand, costs, expectations, or financing constraints)

Aggregate Demand and Price Responses

In many syllabi aligned with standard “Economics 114,” aggregate demand reasoning is tested with AD-like and/or short-run frameworks. Even if the exact model differs, you should know the logic:

• Higher demand tends to raise output in the short run.
• But sustained demand pressure can increase inflation, especially if the economy is near capacity.
• If the economy experiences cost shocks (energy prices, import prices), inflation can rise even if demand is weak.

Example: Import Price Shock

If the currency depreciates:

• Imported inputs become more expensive.
• Production costs rise.
• This can push inflation upward (a supply-side effect).
• If higher prices reduce real incomes, demand may weaken, producing a complex mix of output and inflation effects.

A strong exam answer distinguishes:

• Demand effects vs supply (cost) effects.
• Why short-run inflation may rise even if the long-run outcome depends on policy responses.

Phillips Curve Intuition and Unemployment–Inflation Trade-offs

Some Ekonomie 114 courses include Phillips curve reasoning—often in an intuitive form. The key ideas to mention:

• When unemployment is low, inflation can be higher due to stronger bargaining power and demand pressure.
• Expectations matter: if inflation expectations rise, the trade-off can shift.
• Institutional features (wage setting systems, labor market rigidities) influence how unemployment and inflation interact.

South African Labour Market Lens

South Africa’s labour market discussions frequently appear in exam-style contexts:

• Structural unemployment and skills mismatches.
• Wage bargaining dynamics.
• Informality and participation effects.

Even if your exam does not require South Africa-specific data, your conceptual answer can acknowledge labour-market friction and heterogeneity—e.g., unemployment may not fall easily even when GDP rises.

Fiscal Policy: Multiplier Logic and Crowding Out

Fiscal policy exam questions often ask:

• What happens when government increases spending or cuts taxes?
• How does it affect output, inflation, and debt sustainability?
• Under what conditions is the effect stronger or weaker?

Multiplier and Conditions

A simplified multiplier logic:

• Government spending raises aggregate demand.
• Higher income increases consumption (if households spend a portion of additional income).
• The total effect depends on:
  • marginal propensity to consume,
  • openness (leakages into imports),
  • tax rates,
  • interest rate response (monetary policy reaction).

Crowding Out

Crowding out can occur when:

• Higher government borrowing raises interest rates.
• Private investment falls because borrowing is more expensive.
  In an exam, you should mention:
• Whether the economy is operating below potential output (more room for stimulus),
• The exchange rate and external financing constraints in open economies,
• The policy stance: expansionary vs contractionary.

Monetary Policy: Interest Rates, Inflation Control, and Transmission Mechanisms

Monetary policy often appears via:

• interest rate changes,
• money/credit channel,
• expectations and credibility.

A strong answer:

1. Describes the central bank’s goal (usually inflation stability).
2. Explains transmission:
   • Higher policy rates increase borrowing costs.
   • Credit supply can tighten (depending on banking conditions).
   • Consumption and investment reduce.
   • Aggregate demand falls; inflation slows.
3. Notes time lags and uncertainty.

In South African contexts, exams may expect awareness of:

• exchange rate pass-through into inflation,
• the importance of anchoring inflation expectations,
• the interplay between fiscal deficits and inflation risk.

Open Economy and Exchange Rates: Trade-Offs and Pass-Through

Exchange rates are common in South African macro discussions. You should be able to reason about:

• Devaluation/depreciation:
  • makes exports cheaper to foreigners,
  • makes imports more expensive for residents,
  • tends to shift demand toward domestic goods (depending on substitutes and elasticities),
  • raises inflation via import prices (pass-through).
• Appreciation:
  • reduces import prices,
  • can lower inflation but may worsen trade balances.

A top answer includes:

• The role of elasticities in the volume response.
• Why the trade balance response depends on relative elasticities of exports and imports.
• How income effects and substitution effects both matter.

Growth, Productivity, and Sustainable Development

Many exams incorporate growth reasoning, sometimes indirectly. The core conceptual approach:

• Economic growth depends on accumulation (capital, labour) and productivity improvements.
• Productivity improvements can come from:
  • technology adoption,
  • human capital (education/skills),
  • infrastructure,
  • innovation and efficient institutions.

In exam style questions, you can be asked to evaluate whether a policy promotes long-run growth or only short-run demand stabilization.

Example: Infrastructure Spending vs Consumption Subsidies

• Infrastructure can raise productivity (long-run).
• Consumption subsidies can raise short-run demand but may not improve supply capacity (long-run).
• If subsidies are poorly targeted, they can also increase fiscal pressure and inflation risk.

Your evaluation should reflect time horizons and trade-offs.

Section 4: Welfare Analysis, Cost–Benefit, and Policy Evaluation (Using Economic Tools Rigorously)

Consumer Surplus, Producer Surplus, and Social Surplus

Welfare analysis is where many students lose marks by being imprecise. You should know:

• Consumer surplus (CS): area under the demand curve above the price paid.
• Producer surplus (PS): area above the supply curve below the price received.
• Total surplus: CS + PS (and for externalities, must include external costs/benefits for social surplus).

When policy changes:

• CS and PS redistribute.
• Efficiency concerns look at total surplus and deadweight loss.

How to Structure Welfare Answers

A high-quality exam answer typically includes:

1. Identify the market and whether there is a market failure.
2. State the benchmark (competitive outcome, efficient outcome, or social optimum).
3. Describe the policy tool and its economic effect.
4. Quantify/describe changes in CS, PS, government revenue (if taxes), and deadweight loss.

Deadweight Loss: Interpreting the Triangle

Deadweight loss (DWL) arises when the market outcome deviates from the efficient allocation:

• For taxes: DWL because fewer trades happen.
• For monopoly: DWL because output is restricted.
• For externalities: DWL because negative effects remain unpriced.

On an exam, a strong answer explicitly connects DWL to:

• missed trades with positive net benefits,
• the wedge between MB and MC (socially relevant).

Cost–Benefit Analysis (CBA) Logic

Policy evaluation often appears through CBA:

• compare benefits and costs to society,
• account for distributional impacts if relevant,
• discount future outcomes using a discount rate (if taught).

Even if your syllabus uses a simplified CBA approach, you should be able to:

• distinguish private vs social costs/benefits,
• recognize externalities as missing pieces,
• incorporate uncertainty via scenarios (best/base/worst).

Public Policy Trade-Offs: Equity vs Efficiency

A common exam essay or multi-part question asks you to weigh:

• efficiency gains vs distributional impacts,
• short-run relief vs long-run sustainability.

Example: Reducing Unemployment via Wage Subsidies

A wage subsidy can:

• lower labour costs for employers,
• increase employment or hiring,
• but it can also:
  • reduce productivity incentives,
  • become fiscally expensive,
  • potentially subsidize firms that would have hired anyway (deadweight costs).

A top answer states:

• the mechanism (labour demand shift),
• the targeting issue,
• and why evaluation requires data beyond “employment rose.”

Policy Packages and Second-Best Considerations

Economics exams often push “second-best” thinking:

• Real-world markets rarely allow perfect correction of all distortions.
• If one policy creates side effects (e.g., taxes raising revenue but harming efficiency), the optimal policy may not be the textbook ideal.

Second-best reasoning includes:

• interactions between fiscal and monetary policy,
• tax base limitations and administrative capacity,
• institutional credibility and enforcement.

Worked Mini-Examples (Conceptual)

These short examples are designed to mirror how exam questions are structured.

Mini-Example 1: Negative Externality with a Tax

• Benchmark: without tax, output exceeds the social optimum.
• Policy: impose a per-unit tax equal to marginal external damage.
• Result: firm faces MPC + tax = SMC.
• Efficiency: output reduces toward socially optimal level.
• Welfare: CS increases/decreases depending on price change; PS changes; government gains tax revenue; DWL reduces relative to unregulated case.

In your response, avoid claiming “tax always reduces pollution to zero.” Instead, say the tax aligns incentives at the margin and improves efficiency.

Mini-Example 2: Tariff and Consumer Costs in an Open Economy

• A tariff on imports raises the domestic price of the good.
• Domestic producers can expand output.
• Consumers pay higher prices; consumer surplus falls.
• Government collects tariff revenue.
• Domestic industries benefit; there can be efficiency loss and deadweight loss from consumption and production distortions.
• If foreign producers respond strategically or the tariff affects global supply, results can differ from simple partial equilibrium.

A strong answer explicitly labels which triangles correspond to consumption distortion vs production distortion.

Section 5: Ekonomie 114 Exam Technique—How to Maximise Marks with Structure, Diagrams, and Calculations (Stellenbosch University SU Economics Course Notes Style)

Diagram Mastery: Clean, Correct, and Labelled

Most economics exams award marks for diagrams even when the question also allows words. Your diagram should be:

• Large enough to read.
• Properly labelled (axes, curves, intersection points).
• Consistent: if you say price increases, your diagram must show the new price level higher.
• Narratively consistent with your written explanation.

Common Diagram Errors to Avoid

• Switching axes labels (e.g., putting quantity on the vertical axis).
• Drawing MR above demand (for standard downward-sloping demand, MR lies below demand).
• Forgetting to show tax wedge or subsidy effect.
• Not showing the social marginal cost/benefit curves when externalities exist.

Step-by-Step Calculation Mindset

For quantitative parts, adopt a method that reduces arithmetic mistakes:

1. Write the formula first (elasticity, tax revenue, surplus areas).
2. Substitute values carefully with units.
3. Check plausibility (elasticity sign, magnitude).
4. Interpret result: what does it mean for incidence, welfare, or output?

Elasticity Computation Template

If given:

• price changes from (P_0) to (P_1),
• quantity changes from (Q_0) to (Q_1),

Then:
[
E_d \approx \frac{(Q_1-Q_0)/Q_0}{(P_1-P_0)/P_0}
]
If your lecturer uses the midpoint (arc elasticity) method, use it consistently. The exam typically signals which method is expected.

Short-Answer Questions: Use “Define + Explain + Link to Graph/Policy”

A reliable structure:

• Define the term in one sentence.
• Explain the mechanism (why it matters).
• Link to a diagram outcome or a policy implication.

Example:

• “Elasticity measures responsiveness of quantity to a change in price. It matters for tax incidence because the more inelastic side bears a larger burden.”

This is compact but complete and matches how marking rubrics tend to be written.

Essay/Long Questions: Build a Mark-Saving Framework

For longer questions, a common high-scoring structure is:

1. State the model/benchmark (e.g., competitive equilibrium, market failure benchmark, macro policy framework).
2. Identify the policy change.
3. Predict outcome directions (price/quantity, output/inflation/unemployment).
4. Evaluate welfare (CS/PS/DWL, externalities, fiscal revenue).
5. Discuss limitations and real-world constraints (information problems, implementation, time lags).
6. Conclude with a crisp summary.

Avoid ending with “therefore it is good/bad.” Conclude with “it improves efficiency under these conditions, but has these trade-offs.”

South African Contextualisation (Without Inventing Specific Data)

Because these are study notes for South Africa, your answers should naturally reference:

• persistent unemployment and skills mismatches,
• energy price volatility and input costs,
• exchange rate pass-through into inflation,
• fiscal constraints and public debt concerns,
• inequality and distributional impacts.

But do not invent precise national numbers unless your exam question provides them. Instead, use qualitative contextual references that do not require external statistics.

Worked Exam-Style Problem (Integrated)

Below is a combined mini-problem that uses micro + policy logic. It’s not claiming specific numerical values from any particular exam; it demonstrates the reasoning you should apply when your exam provides numbers.

Problem Scenario (Template)

A government introduces a unit tax on a good where consumption creates a negative externality. The market is initially at equilibrium with no tax. The government’s aim is to reduce the external harm and improve efficiency.

What Your Answer Should Include

1. Identify market failure: negative externality means private cost < social cost.
2. Before policy: show where output is too high (social cost not internalized).
3. Tax effect:
   • Tax increases the private marginal cost faced by consumers/producers (depending on incidence).
   • Equilibrium quantity falls from (Q_0) to (Q_t).
4. Incidence: if demand is more inelastic than supply, consumers bear more burden; otherwise producers bear more.
5. Welfare components:
   • Government raises revenue.
   • DWL decreases relative to the unregulated externality outcome if tax is appropriately sized.
6. Efficiency claim:
   • Optimal is a Pigouvian tax equal to marginal external damage (at the margin).
7. Limitations:
   • External damage may be hard to measure.
   • Enforcement and compliance can affect effectiveness.
   • Administrative costs and political economy may limit the tax size.

This is the sort of reasoning exam markers look for: it is both diagram-linked and policy-evaluated.

Time Management Strategy During the Exam

A practical approach:

• First 5–10 minutes: read the entire paper and identify which questions have:
  • diagrams you can draw quickly,
  • formulas you know you can compute accurately,
  • marks allocated to theory vs calculation.
• Answer the highest-mark confidence questions first.
• When stuck, write:
  • the relevant formula,
  • the direction logic (“price rises, quantity falls”),
  • and label the diagram points anyway.
    Partial credit can be awarded for correct structure and partial logic even if calculations are incomplete.

Section 6: Course-Competency Map for Ekonomie 114 (Institutions and How SU Students Commonly Prepare)

Cluster by Institution: Stellenbosch University Economics Course Notes Focus

This document belongs to a collection categorized as “Stellenbosch University (SU) Economics Course Notes.” In SU-aligned preparation, students typically benefit from a competency map that mirrors how assessments are distributed: core theory, model application, and welfare/policy evaluation. The goal is to ensure you don’t only “recognize” topics—you can produce answers under time pressure.

Stellenbosch University (SU) Economics 114 Competency Areas

Most SU students can expect Ekonomie 114 preparation to emphasize at least:

• Microeconomic equilibrium analysis (supply/demand, taxes/subsidies, welfare).
• Market structures (monopoly and welfare implications; sometimes discrimination concepts).
• Market failure (externalities, public goods, information asymmetries).
• Macroeconomic reasoning (output, inflation, unemployment, interest rate/fiscal policy mechanisms).
• Policy evaluation (trade-offs, second-best realities, efficiency vs equity).

If your exam paper has a specific emphasis (e.g., more micro diagrams than macro essays), adapt the weighting of your revision.

How SU Students Should Practise for Success

A high-yield practice routine:

1. Diagram drills (2–3 diagrams per day)

   • Monopoly diagram with MR and DWL
   • Tax wedge diagram with incidence
   • Externality with MPC/MSC and efficient output

2. Calculation drills (short bursts)

   • Elasticity computations with both methods if uncertainty exists
   • Tax revenue and deadweight loss area logic (qualitative if not given numbers)

3. Policy essays

   • Write 1-page answers that follow the essay framework:
     • model → mechanism → diagram → welfare → limitations

4. Error log

   • Track repeat mistakes: wrong curve shift direction, sign errors in elasticity, missing welfare components.

Institution-Specific Exam Writing Style (SU-Friendly)

While each lecturer’s rubric differs, SU-style marking often rewards:

• Clarity of model references (mention MB/MC, MPC/MSC, MR/MC explicitly).
• Consistency between diagrams and written text.
• Explicit welfare terminology (CS, PS, DWL, external costs/benefits).
• Policy evaluation with conditions rather than absolute claims.

For example:

• Instead of “a tax fixes the problem,” write:
  • “A Pigouvian tax can internalize external costs if the marginal damage is correctly set; otherwise the reduction is less than socially optimal.”

This kind of conditional reasoning signals mature economics understanding.

Building Your Personal “SU Economics 114” Revision Schedule

A balanced schedule over a study week could look like:

• Day 1–2 (Micro foundations): taxes/subsidies, incidence, surplus, elasticity.
• Day 3 (Market failure): externalities and policy instruments.
• Day 4 (Market structures): monopoly with welfare; discrimination if included.
• Day 5 (Macro core): inflation, unemployment intuition, exchange rate and open economy reasoning.
• Day 6 (Integrated practice): one full timed set of short questions plus one diagram-heavy question.
• Day 7 (Review & error log): correct weak areas, rewrite your worst diagrams, and rehearse policy essay frameworks.

Even if your exam includes different topics, this schedule ensures you maintain equilibrium between theory recall and applied reasoning.

Final Note on Exam Readiness (Actionable Checklist)

Before the exam, make sure you can do the following from memory and quickly:

• Draw and label:
  • tax wedge and incidence,
  • monopoly MR/MC outcomes,
  • externality MSC/MPC with efficient output.
• Explain:
  • why incidence depends on elasticities,
  • why DWL arises under taxes/monopoly/externalities,
  • how exchange rates can transmit to inflation in open economies.
• Compute:
  • elasticity from given price/quantity changes,
  • basic welfare/tax revenue relationships from equilibrium quantities.

When these competencies are consistent and automated, you can spend exam time on higher-order reasoning rather than struggling with basic mechanics.