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NotesPhilosophy HLTopic 4.3How do we apply ethics?
Back to Philosophy HL Topics
4.3.42 min read

How do we apply ethics? (Philosophy HL)

IB Philosophy • Unit 4

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Contents

  • From theory to the real world
  • Three ways people actually decide
  • Pulling the topic together
  • Paper 1 Section B — a worked plan
The big idea: You've now seen the same thing happen three times: on a dying patient, on a profit-hungry firm, on a starving stranger — virtue, duty and consequences pull different ways.

So here's the question the whole topic has been building to: when the theories conflict on a real case, how do we ACTUALLY decide?

Applying ethics means turning a big theory into a verdict on one messy case — and the hard part is that the theories rarely agree, so we need a way to weigh them rather than just pick a favourite.

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When the theories clash, people reach for one of three moves — and each has a weakness.

The three moves

  • Pick one theory and apply it strictly
  • Balance them — weigh duty, consequences and virtue together
  • Start from the case — judge THIS situation, use theory as a guide

The catch with each

  • One theory alone gives answers that feel wrong in some cases
  • Balancing has no fixed recipe — how much weight to each?
  • Case-first risks just rationalising what you wanted anyway
Checkpoint — how we decide: In one line: when the theories conflict, don't just pick a favourite — weigh them against the actual case and give reasons others can test. Hold that — it's exactly what a §B essay does.

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Go further — higher-level insight: See how each field is the SAME clash on a different battleground. Biomedical, business and global poverty all set duty against consequences against virtue — the only thing that changes is the case. Showing that applied ethics is one method running on three problems, not three separate topics, is exactly the synthesis a top-band Section B answer needs.
The move that scores: In Paper 1 §B you don't just describe an issue. You argue a claim, test it against the strongest objection, weigh them, and reach a reasoned conclusion. That doing philosophy is what the markbands reward.
How Section B works: Ethics is an OPTIONAL theme, so it's examined in Paper 1 Section B: a straight essay [25] with NO stimulus. You're handed a CLAIM and asked to Evaluate or Discuss it. The whole skill is to argue a view, test it against the strongest objection, weigh them, and reach a reasoned conclusion — using the cases and thinkers from this topic as evidence.
IB-style questionEvaluate[25 marks]

Evaluate the claim that we have the same duty to help distant strangers as to help those close to us.

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Common mistakes: 1. Describing the theories instead of arguing the claim. 2. Only one side — top bands need the objection. 3. No thinkers/cases — bring in Singer, the drowning child, special duties. 4. No conclusion — decide, with a reason. 5. Name-dropping — a name earns nothing without its argument.

IB Exam Questions on How do we apply ethics?

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How How do we apply ethics? 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 How do we apply ethics?.

AO1
Describe

Give a detailed account of processes or features in How do we apply ethics?.

AO2
Explain

Give reasons WHY — cause and effect within How do we apply ethics?.

AO3
Evaluate

Weigh strengths AND limitations of approaches in How do we apply ethics?.

AO3
Discuss

Present arguments FOR and AGAINST with a balanced conclusion.

AO3

See the full IB Command Terms guide →

Related Philosophy HL Topics

Continue learning with these related topics from the same unit:

4.1.1What makes an action right?
4.1.2Virtue ethics
4.1.3Deontological ethics
4.1.4Teleological / consequentialist ethics
View all Philosophy HL topics

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