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NotesEconomicsTopic 3.7Evaluating supply-side policies
Back to Economics Topics
3.7.35 min read

Evaluating supply-side policies

IB Economics · Unit 3

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Contents

  1. 1Strengths
  2. 2Limits
  3. 3Market-based v interventionist
  4. 4Exam-style question

Evaluate means weighing the strengths against the limits, and judging.

What supply-side policies do well

1

Long-term growth

More capacity: the economy can produce more for years.

LRAS right
2

Lower inflation

Output grows with demand, so prices need not rise.

Price level
3

Fewer structural unemployed

Training gives workers the skills firms want.

Jobs
4

Competitiveness

Lower costs make exports cheaper abroad.

Exports

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Remember it as: More capacity: more output, steady prices.

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The same policies have costs and blind spots.

Their limits

1

Time lags

A new school pays off when its pupils start work, a decade later.

Slow
2

Cyclical unemployment

In a recession firms lack buyers, not skilled workers.

Wrong tool
3

Equity

Weaker unions and lower benefits can widen income gaps.

Inequality
4

Cost and the environment

Interventionist spending raises debt; more output can mean more pollution.

Side effects

The points to remember

  • Write it like this: "Supply-side policies work in the long run; they do little against cyclical unemployment in a recession."
  • Interventionist ones cost money; market-based ones risk inequality.

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Each kind has its own strength and its own risk.

Market-based

  • Strength: no cost to the budget; often raises tax revenue.
  • Limit: can widen inequality and cut worker protection.
  • Germany, 2003-2005 reforms: unemployment fell from about 11% in 2005 to about 6% by 2015, but many took low-paid mini-jobs.

Interventionist

  • Strength: targets the gaps the market leaves, such as skills and roads.
  • Limit: costs the government money and takes years.
  • Singapore's SkillsFuture (2015) pays adults to retrain, at a cost to the budget.

The points to remember

  • Name one real example for each side.
  • The best answer often combines both kinds with demand-side policy.

Paper 1 asked this in November 2024, as part (b) for 15 marks.

IB-style questionEvaluate[15 marks]

Using real-world examples, evaluate whether the benefits of supply-side policies for the economy will always outweigh their limitations.

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How the 15 marks are given

MarksWhat your answer needs
13–15Theory fully explained, terms right all the way through, balanced evaluation, real examples fully developed to support the argument
10–12Theory explained, terms mostly right, evaluation mostly balanced, real examples developed
7–9Theory partly explained, some evaluation but one-sided, examples partly developed
4–6Theory only described, evaluation superficial, examples only named
1–3Theory stated but not relevant, no evaluation

IB Exam Questions on Evaluating supply-side policies

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How Evaluating supply-side policies Appears in IB Exams

Examiners use specific command terms when asking about this topic. Here's what to expect:

  • Define

    Give the precise meaning of key terms related to Evaluating supply-side policies.

    AO1
  • Describe

    Give a detailed account of processes or features in Evaluating supply-side policies.

    AO2
  • Explain

    Give reasons WHY — cause and effect within Evaluating supply-side policies.

    AO3
  • Evaluate

    Weigh strengths AND limitations of approaches in Evaluating supply-side policies.

    AO3
  • Discuss

    Present arguments FOR and AGAINST with a balanced conclusion.

    AO3

See the full IB Command Terms guide

Related Economics Topics

Continue learning with these related topics from the same unit:

3.1.1What is GDP and how is it measured?3.1.2Real vs nominal GDP and comparisons3.1.3GDP and well-being3.1.4The business cycle
View all Economics topics
Improve your exam techniqueCommand terms, paper structure, and mark-scheme tips for Economics
Previous3.7.2Interventionist supply-side policiesNextBenefits of international trade4.1.1

14 practice questions on Evaluating supply-side policies

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