Evaluation is the part students understand least. Most were told to "say it depends" and "give both sides". That advice is incomplete, and it is why so many answers stop at a summary.
Real evaluation has one job: judge how strong your own analysis is.
What evaluation is not
These do not earn evaluation marks on their own:
- "However, it depends on the situation."
- "On the other hand, some people disagree."
- "This could be good or bad."
- A conclusion that repeats both sides without deciding.
The examiner is looking for reasoning. If you do not explain why something is a limitation, or how a condition changes the outcome, it is an opinion, not evaluation.
The four moves that work
Use these four patterns. They cover almost every question.
Move 1 — Say what it depends on, and explain how
Pattern:
Whether [outcome] happens depends on [condition]. If [condition is true], then [mechanism], so [result]. If [condition is false], then [different result].
Example:
Whether a tax reduces consumption depends on the price elasticity of demand. If demand is inelastic, consumers keep buying the good even when the price rises, so consumption falls only slightly and the externality remains. If demand is elastic, consumers switch to substitutes, so the fall in consumption is much larger.
The second and third sentences are the evaluation. The first sentence alone is not.
Move 2 — Judge the size of the effect
Pattern:
The effect may be small because [reason]. [Mechanism]. Therefore [judgement].
Example:
The effect on employment may be small because the tax is spread across many small firms, each paying only a little. Firms may absorb the cost through lower profit rather than cutting staff, so job losses are limited.
Move 3 — Consider time lags and unintended effects
Pattern:
In the short run, [effect]. In the long run, [different effect], because [mechanism].
Example:
In the short run, a subsidy increases consumption quickly because the price falls immediately. In the long run, producers may become dependent on the subsidy and invest less in efficiency, so the cost to the government rises without a matching gain in output.
Move 4 — Weigh and decide
Pattern:
On balance, [side] is stronger because [reason]. The condition that would change this is [condition].
Example:
On balance, removing the subsidy is more likely to improve allocative efficiency, because the current subsidy encourages overconsumption and the deadweight loss is large. This would change if demand were highly inelastic, since consumption would barely fall.
The evaluation toolkit
When you are stuck, run through this list. You will usually find two or three usable points.
| Lens | Question to ask |
|---|---|
| Elasticity | How responsive are consumers or producers? |
| Size | Is the change large or small? |
| Time | Short run or long run? |
| Magnitude | How big is the market or the effect? |
| Trade-offs | Who gains and who loses? |
| Government failure | Could the policy make things worse? |
| Assumptions | What must be true for the analysis to hold? |
| Alternatives | Is there a better policy? |
A simple three-sentence evaluation paragraph
If you struggle to write evaluation, use this structure:
- Condition — "This depends on..."
- Mechanism — "...because if X happens, then Y, which means Z."
- Judgement — "So the argument is stronger/weaker when..."
That is enough for a real evaluation point.
The difference in one example
Weak:
However, this depends on elasticity.
Strong:
However, this depends on elasticity. If demand is inelastic, consumers do not respond much to the price change, so the policy mainly raises revenue rather than changing behaviour. Therefore the policy is more effective when close substitutes exist.
One explains nothing. The other explains the mechanism and reaches a judgement.
How evaluation connects to your conclusion
Evaluation is the reasoning. The conclusion is the decision.
Your conclusion should use your evaluation, not repeat your analysis. If your evaluation says "the effect depends on elasticity", your conclusion should say which case you think is more likely and why.
The most common evaluation mistakes
- Saying "it depends" without explaining how.
- Listing pros and cons without connecting them.
- Evaluating something you never analysed. You cannot judge a chain you did not build.
- Contradicting yourself in the conclusion.
- Writing evaluation in the analysis section and losing marks in both.
Practice drill
Take one analysis chain you have written. Then write three different evaluation sentences for it:
- One about elasticity.
- One about the time period.
- One about government failure.
Then choose the strongest one and explain why.
This drill trains the exact skill the examiner rewards, and it takes ten minutes.
EconIQ scores evaluation separately from analysis, so you can see whether your problem is building chains or judging them.