Exam revision

Move from economic explanation to a supported essay judgment

Economics Paper 1 preparation benefits from distinguishing a request for explanation from a request for evaluation.

IBvia study guide3 min readUpdated 03 October 2026DP1 & DP2

Read the task before choosing content

Economics Paper 1 preparation benefits from distinguishing a request for explanation from a request for evaluation. Read the whole question, identify the policy or relationship and mark the command term. Then decide what reasoning the answer needs. A longer evaluative response usually requires more than an extended version of a shorter explanation. Its additional work is to judge outcomes using relevant conditions and context, while retaining a clear analytical foundation.

Plan the explanatory chain

Write the core mechanism as a sequence of causes and outcomes. Identify the diagram and terminology needed to make it precise. For each step, ask why the next step follows. Keep the chain tied to the question's scope. A correct model about a different market or objective cannot rescue an answer that has drifted away. Brief planning helps you select relevant knowledge before the pressure of writing encourages a memorized essay.

Build evaluation from the analysis

Choose criteria such as effectiveness, distribution, time horizon or opportunity cost where appropriate. Identify conditions that affect the predicted outcome and explain their significance. Evaluation should test the same mechanism you developed. Avoid treating every paragraph as a separate topic. Use examples that illuminate the conditions, and make clear which details are hypothetical when practising. A judgment should weigh the considerations, rather than merely acknowledge that several considerations exist.

Develop an indirect-tax response

For a hypothetical question about an indirect tax reducing consumption of a harmful product, explanation covers how the tax changes costs, prices and quantity under the model. Evaluation could examine demand responsiveness, the availability of substitutes and effects on different households. If demand is relatively unresponsive, consumption may fall less while expenditure rises for continuing consumers. That reasoning supports a conditional judgment about whether the tax meets the stated objective, rather than a generic statement that taxes raise revenue.

Use examples economically

Give enough context to show why an example supports the argument, then return to the mechanism or judgment. A long narrative about a country can consume space without adding analytical value. Check factual examples against reliable class sources before memorizing them, and keep dates attached. When an example differs from the model, explain what the difference reveals. Do not hide complications merely because a simpler story would be easier to reproduce in an examination.

Diagnose both answer types

Practise an explanation and an evaluative response on the same topic. For the first, check missing causal steps and diagram links. For the second, check whether qualifications change the conclusion and whether the final judgment follows from the discussion. Match practice timing and question structure to your current course materials. Log one specific improvement after feedback, then attempt a new topic to confirm that the improvement concerns the skill rather than a memorized answer.

Before finishing, reread the question alongside the conclusion. Check that you judge the named objective, rather than a related benefit you find easier to discuss. A policy may raise revenue without substantially achieving the consumption reduction the question asks you to assess.

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This is an original practical guide from IBvia. The examples are illustrative; your subject guide, assessment year and school instructions determine the requirements.

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