Personas help designers maintain a clear focus on users by representing their characteristics, needs, goals, behaviours and frustrations. However, personas are only valuable when supported by reliable user research; weak or stereotypical personas can misdirect the design process.
A persona is a fictional but evidence-based profile representing an important group within the target market. In user-centred design, designers create personas from primary and secondary research, such as interviews, observations, questionnaires and demographic data.
The designer can then use the persona when establishing design requirements, generating ideas and evaluating concepts. For example, a persona describing an older user with reduced hand strength may lead to requirements for low operating force, larger controls and improved grip.
| Advantages | Disadvantages |
|---|---|
| Keeps attention on users rather than the designer's personal preferences. | May oversimplify the diversity found within a user group. |
| Makes research findings easier to understand and communicate to stakeholders. | Can reinforce stereotypes if based on assumptions rather than evidence. |
| Supports empathy by connecting needs and frustrations to a realistic user profile. | The fictional format may give invented details the appearance of reliable data. |
| Helps designers generate and evaluate ideas against consistent user needs. | Developing accurate personas requires time and high-quality research. |
| Can reveal contrasting requirements when several personas are compared. | A limited set of personas may exclude minority or extreme users. |
The common misconception is that a persona is simply an imaginary customer created by the designer. A valid persona is a research-based model, not a substitute for direct contact with real users. Personas should therefore be updated when testing or further research produces new evidence.
In an IB Design Technology response, distinguish between describing and evaluating. For an evaluate question, give balanced advantages and disadvantages, support them with a design example, and reach a justified conclusion: personas improve user-centred decision-making when grounded in representative evidence and combined with direct user research.