Quantifying Diversity In User Experience

As the field of Human-Computer Interaction evolves from the study of the usability of interactive products towards a more holistic understanding of the psychological and social impact of products on people's lives, we need new methods for inquiring into users' experiences. This thesis identifies the notion of diversity in users' experiences with interactive products, and proposes methods and tools for modeling two different sources of diversity: (a) interpersonal diversity in users' responses to early conceptual designs, and (b) the dynamics of users' experiences over time.