IB TOK essay guide: from prescribed title to finished argument

The essay at a glance

What a TOK essay is, and is not

A TOK essay is not a report on a topic, a personal opinion piece, or a science essay. It is an argument about knowledge: how we know things in different areas, how reliable that knowledge is, and what shapes it. The title gives you a claim or a question; your job is to explore it critically, which means taking a position, testing it, and recognising where it does and does not hold.

The essay is built from knowledge questions. These are open, contestable questions about knowledge itself, such as "How far can evidence settle a disagreement between experts?" They are not subject questions like "What caused the First World War?" Real examples from your subjects make the argument concrete: a scientific revision, a historical controversy, a proof, a work of art. Examples should be specific and accurate, and you should explain what each one shows, rather than listing them.

Unpacking a title: a worked example

Invented title for practice only, not a real prescribed title: "Disagreement is more useful than agreement in the pursuit of knowledge. Discuss with reference to two areas of knowledge."

1. Define the key terms for your argument: what counts as disagreement (between individuals, schools of thought, generations), what "useful" means (producing new knowledge, exposing errors, building trust), and what "pursuit" implies (a process, not a finished body of knowledge).
2. Choose two areas of knowledge where the title plays out differently. Natural sciences and history work well here.
3. Claim in the natural sciences: disagreement between competing hypotheses drives experiments that settle questions. Example: a specific case where rival explanations were tested and one was rejected.
4. Counterclaim in the natural sciences: much progress depends on agreement, such as shared methods, peer review and accepted standards; without agreement on method, disagreement cannot be resolved.
5. Claim in history: competing interpretations of the same event reveal the perspectives behind each account. Example: a specific historiographical debate you have studied.
6. Counterclaim in history: some disagreement persists without resolution because historians weigh evidence through different values, so it may produce understanding without producing agreed knowledge.
7. Conclusion: disagreement is most useful when there is agreement about how it can be resolved; the essay can argue this distinction and note its implication for each area of knowledge.

A structure that works

• Introduction (about 150 words): your interpretation of the key terms and a clear line of argument.
• Area of knowledge 1 (about 600 words): claim, example, analysis; counterclaim, example, analysis; a short evaluation.
• Area of knowledge 2 (about 600 words): the same pattern, with links back to the first area where they compare.
• Conclusion (about 200 words): your answer to the title, its implications, and its limits.
• Keep a short reference list for every example you use; references do not count towards the word limit.

Common mistakes

• Changing the title or answering an easier version of it.
• Generic or invented examples such as "a scientist might" instead of a named case.
• Describing an example without saying what it shows about knowledge.
• Counterclaims that are only mentioned and never evaluated.
• Writing the essay in one weekend before the deadline. The best essays are planned over several weeks of conversations with the TOK teacher.

How one-to-one lessons help with the essay

TOK is a discussion subject, and many students simply have not had enough discussion. A tutor who teaches TOK uses lessons to talk through the prescribed titles, test the student's interpretations, and push back with counterclaims so the student learns to argue both sides. The tutor helps the student find accurate examples from their own subjects and explains what each one shows. Practice titles from earlier sessions can be used freely for this.

For the actual essay, the IB requires the work to be the student's own. A tutor can discuss ideas and give general feedback on planning, but does not write, rewrite or edit the essay, and students should be open with their TOK teacher about outside support.