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IGCSE · Cambridge (CIE) · 0457

Assess actions against evidence and consequences

Compare proposed actions, likely effects, feasibility, sustainability and whose needs each option serves.

Section ISSUE-08 · Optional issue context · Employment

Cambridge IGCSE Global Perspectives 0457 · AO1-ACTION
Exam scope and assessment notes

This lesson uses original StudyForA explanations and fictional practice scenarios; it is not Cambridge text or an official assessment. The current syllabus for the learner's exam year and their centre instructions take precedence. All 22 broad themes are optional issue contexts, not 22 bodies of facts to memorise: Cambridge says topic knowledge is not assessed and candidates are not expected to experience every theme. Candidates select relevant themes with their teacher. Paper 1 / Component 1 is externally assessed. Component 2 is internally set and externally marked; use centre guidance for topic choice and submission. Component 3 is internally assessed and externally moderated; it requires a real team of two to five and centre assessment. StudyForA practice is original self-check support, not Cambridge material, an official mark scheme, an authenticated report, assessed team evidence or a predicted grade. Private candidates cannot enter for 0457; confirm the exam year, series and centre arrangements.

Before you begin

  • Read the question and identify the issue, source or assessment component it concerns.

Work on paper. Try each question before revealing help, and explain why your method works.

Quick readiness check

What is the strongest basis for recommending an action?

What you will learn

  • Assess possible courses of action
  • Use evidence and reasoning to justify a judgement
  • Consider causes, consequences and sustainability

Evaluate the response, not just its intention

A proposed action should connect to the issue and the evidence about its causes. Consider likely benefit, affected groups, cost, access, feasibility, unintended effects and how success would be measured. A well-meant plan may still miss the problem or shift costs to others.

Compare at the right scale

An action can be local, national or global. Explain which decision-makers can deliver it and how the scales connect. Sustainability may include environmental, social and economic effects over time; it does not guarantee that one option is best in every context.

Sources for this lesson

Pause and explain

Why should a recommendation include how success will be measured?

Put the idea to work

Worked example

A fictional school wants to reduce single-use cups. It could add a refill station, charge for disposable cups, or combine both. How should the options be compared?

Show the worked solution
  1. Set a measurable outcome and a baseline.
  2. Compare access, cost, likely uptake and unintended effects.
  3. Choose with reasons and name evidence that could change the judgement.

Answer A refill station may improve access but needs maintenance; a charge may reduce disposable use but affect students with fewer alternatives. A combined option could be tested with a baseline count, access checks and feedback. The best choice depends on costs, uptake and equity evidence, not the policy label alone.

Try a topic test

Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.

Test this topic →

From guided practice to a new situation

Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.

1 · Guided

A town considers a weekend bus route to improve access to a market. Name three criteria and a way to evaluate the route after a trial.

Give me a hint

Include access, feasibility and a measure of use or benefit.

Compare my reasoning
  1. Choose criteria linked to the stated access problem.
  2. Collect a baseline and comparable trial evidence.
  3. Consider who may benefit or be missed and what else may affect results.

Criteria could include arrival times for intended users, operating cost and access for people with mobility needs. Compare passenger counts and user feedback with a baseline or comparable period, and record service reliability and other changes. High use alone would not show that everyone who needs the route can use it.

Look for these in your work

  • Uses relevant criteria
  • Plans a before/after or comparison measure
  • Considers access and limits
2 · Independent

A digital reminder may reduce missed appointments, but some people lack reliable internet. Evaluate a digital-only plan and suggest a fairer test.

Give me a hint

Compare expected benefit with access, privacy and alternatives.

Compare my reasoning
  1. State one possible benefit of reminders.
  2. Identify people or risks the digital-only approach may exclude.
  3. Suggest an opt-in, multi-channel test and measures for both use and access.

Digital reminders may help people who can access and consent to them, but a digital-only system can exclude people without reliable internet or devices and raises privacy questions. Test an opt-in approach with a non-digital alternative, measuring delivery, attendance and access by channel while protecting personal data.

Look for these in your work

  • Recognises a plausible benefit
  • Explains an access or privacy risk
  • Proposes a measurable inclusive test
3 · Transfer

A community group proposes planting trees to reduce heat. Give one likely benefit, two conditions for success and one possible unintended effect.

Give me a hint

Avoid assuming the proposal works without maintenance, suitable placement and evidence.

Compare my reasoning
  1. Connect a possible benefit to the issue.
  2. Identify practical conditions and affected groups.
  3. Name a trade-off and a way to monitor results.

Tree shade could make a specific public area more comfortable, if suitable species and locations are chosen and maintenance and water are available. Planting may compete with utilities or accessible paths, and young trees may not provide quick shade. Monitor survival, shade and user access over time with local review.

Look for these in your work

  • Links an action to a plausible benefit
  • Names feasibility conditions
  • Acknowledges a trade-off and measure

Common mistakes

  • Assuming a policy works because its goal is positive
  • Ignoring costs, access or unintended effects
  • Making a recommendation without stating what evidence supports it
Recall without your notes

What can you explain now?

What is the strongest basis for recommending an action?

Compare with the explanation

Compare realistic options against evidence, criteria and likely effects on different groups

This makes the recommendation reasoned and shows trade-offs.

After trying it yourself, choose your next review. This is your self-assessment.

Your review choice appears on Today. Sign in to sync it across devices.

Make it stick

Give one criterion that helps compare actions and explain whose needs it measures.

If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.

Keep learning Global Perspectives

Course scope and assessment

All three 0457 components and the mapped research, analysis, evaluation, reflection and communication skills have original StudyForA learning and practice. The topic list supplies flexible contexts; it is not a prescribed knowledge syllabus. Open response, research, Individual Report and Team Project work here is practice only, not official marking, grade prediction, external moderation or centre assessment. All 22 broad themes are optional issue contexts, not 22 bodies of facts to memorise: Cambridge says topic knowledge is not assessed and candidates are not expected to experience every theme. Candidates select relevant themes with their teacher. Paper 1 / Component 1 is externally assessed. Component 2 is internally set and externally marked; use centre guidance for topic choice and submission. Component 3 is internally assessed and externally moderated; it requires a real team of two to five and centre assessment. StudyForA practice is original self-check support, not Cambridge material, an official mark scheme, an authenticated report, assessed team evidence or a predicted grade. Private candidates cannot enter for 0457; confirm the exam year, series and centre arrangements.

StudyForA · Learn with understanding

Original teaching content and links to official sources. Check your exam year and qualification before using a resource.