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Before designing any product, a designer must thoroughly investigate the problem, the target market and existing solutions. This lesson covers the investigation methods required by AQA GCSE Design and Technology (8552), Section 3.3. These methods are tested on Paper 2: Designing and Making Principles and are also essential for the research phase of your NEA project.
Investigation ensures that the designer:
AQA Exam Tip: In your NEA, the quality of your investigation directly affects the quality of your design specification. Examiners look for evidence that your design decisions are based on genuine research, not assumptions.
Market research is the systematic collection and analysis of information about a market, including consumers, competitors and trends. It is divided into two types:
Primary research involves collecting new, original data directly from potential users or the market.
| Method | Description | Advantage | Disadvantage |
|---|---|---|---|
| Questionnaires | Printed or online forms with structured questions | Can reach many people quickly; easy to analyse | Questions may be leading; low response rate |
| Interviews | Face-to-face or phone conversations with open-ended questions | In-depth, qualitative data; can follow up on answers | Time-consuming; small sample size |
| Focus groups | A small group discusses a product or concept guided by a facilitator | Rich, detailed opinions; group dynamics reveal new ideas | Dominant personalities can influence the group |
| Observation | Watching how people use existing products in real settings | Reveals genuine behaviour (not just what people say) | Time-consuming; observer may influence behaviour |
| User trials | Users test a prototype and give feedback | Direct feedback on the actual product | Requires a working prototype |
Secondary research uses existing data that has already been collected by others.
| Source | Example |
|---|---|
| Books and textbooks | Material properties, manufacturing processes |
| Websites | Competitor product specifications, consumer reviews |
| Magazines and journals | Design trends, technology developments |
| Market reports | Mintel, Statista — industry data on consumer spending |
| Patent databases | Existing inventions and design solutions |
AQA Exam Tip: A good answer distinguishes between primary and secondary research. If asked to "describe two methods of investigation," give one of each and explain what data each provides.
An interview is a conversation between the designer and a potential user, expert or stakeholder. Interviews can be:
A focus group is a guided discussion with 6–10 participants, led by a facilitator. The facilitator introduces topics and encourages discussion, while observing body language and group dynamics.
Before launching the Dyson Supersonic hairdryer, Dyson conducted focus groups with hairdressers and consumers to understand pain points with existing dryers (weight, noise, heat damage). This research directly influenced the product's lightweight design and intelligent heat control.
Product analysis (also called product evaluation or product study) involves examining existing products to understand their design, materials, manufacture and performance.
ACCESS FM is a widely used framework for structured product analysis:
| Letter | Factor | Questions to Ask |
|---|---|---|
| A | Aesthetics | What does the product look like? Is it visually appealing? What colours, textures and shapes are used? |
| C | Cost | How much does it cost? Is it good value? How does the cost compare to competitors? |
| C | Customer | Who is the target market? What age, gender, lifestyle? |
| E | Environment | Is it made from sustainable materials? Can it be recycled? What is its carbon footprint? |
| S | Size | What are the dimensions? Is it the right size for its purpose and target user? |
| S | Safety | Is it safe to use? Does it meet safety standards? Are there any hazards? |
| F | Function | What does it do? How well does it perform its intended function? |
| M | Material | What materials is it made from? Why were these materials chosen? |
Physically taking a product apart (disassembly) reveals:
AQA Exam Tip: Product analysis using ACCESS FM is a common 6-mark question. Practise analysing familiar products (e.g. a desk lamp, a water bottle, a phone case) using all eight factors. Include specific details, not vague generalisations.
All investigation data should feed into a design specification — a detailed list of criteria that the final design must meet.
| Investigation Method | Data Gathered | Specification Point |
|---|---|---|
| Questionnaire | 78% of users prefer a zip closure | "The product must have a zip closure" |
| Product analysis | Competitor bags weigh 800 g–1200 g | "The product must weigh less than 900 g" |
| Interview | Users want a waterproof laptop pocket | "The product must include a padded, waterproof laptop compartment" |
| Focus group | Users dislike single-colour designs | "The product must be available in at least three colourways" |
Investigation is the foundation of good design. Market research (primary and secondary), interviews, focus groups and product analysis all provide different types of data. Using a structured framework like ACCESS FM ensures thorough analysis. All findings should be used to create a detailed, justified design specification.
AQA Exam Tip: In the exam, always link investigation methods to the information they provide. Do not just list methods — explain what the designer would learn from each one and how it would influence the design.