• User population
• Classification of users
• The use of personae, secondary personae and anti-personae in user research
• Scenarios provide physical and social context for different personae
• Use case
• Users can be classified by age, gender and physical condition.
• Scenarios are based on best, worst and average case.
The various strategies for user research can be used by the designer to explore the true nature of a problem. Through the use of personae and use cases, the designer can build a range of possible scenarios with which to explore the problem in detail.