Critical analysis and evaluation — AQA A-Level Design and Technology: Product Design
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Critical analysis and evaluation explained
Critical analysis means judging a product against criteria rather than just describing it.
Read the full explanation
Apply this to your own work and to commercial products. For your own product, compare the outcome with the specification, identify where it meets or misses each point, and propose a specific modification, such as changing a material, joint or dimension, with a reason. For a commercial product, evaluate function, ergonomics, aesthetics, cost, sustainability and user feedback, then suggest an improvement and judge whether it is worth making. Discussion should weigh strengths against weaknesses and justify each proposed change by reference to evidence, such as a test result, user comment or specification point. The aim is reasoned improvement of the original idea, not a list of faults.
Your focus
- Analyse a product critically against explicit criteria.
- Propose and justify specific improvements to both own and commercial products.
- Evaluate whether a proposed modification is worthwhile.
Critical analysis and evaluation exam tips
Marking Points
- Analyses a product against explicit criteria such as the specification, function, ergonomics, cost or sustainability.
- Applies critical analysis to both the learner's own product and a commercial product.
- Proposes a specific improvement or modification to the original idea rather than a vague suggestion.
- Justifies each proposed change with evidence, such as test data, user feedback or a specification point.
- Weighs strengths against weaknesses and judges whether a modification is worthwhile.
- Reaches a supported conclusion about how the original idea could be improved.
Examiner Tips
- 💡Set out clear criteria before judging so the analysis has a framework.
- 💡Support every proposed modification with a reason drawn from evidence.
- 💡Finish with a judgement on whether the improvement is worth the cost or effort.
Common Mistakes
- Listing faults without judging them: correct this by evaluating each point against a criterion and deciding whether change is justified.
- Proposing vague improvements such as 'make it better': correct this by naming the specific change and its expected effect.
- Analysing only a commercial product and ignoring the learner's own work: correct this by covering both as the statement requires.