This book explores the design process for user experience and engagement, which expands the traditional concept of usability
and utility in design to include aesthetics, fun and excitement. User experience has evolved as a new area of Human Computer
Interaction research, motivated by non-work oriented applications such as games, education and emerging interactive Web 2.0.
The chapter starts by examining the phenomena of user engagement and experience and setting them in the perspective of cognitive
psychology, in particular motivation, emotion and mood. The perspective of aesthetics is expanded towards interaction and
engagement to propose design treatments, metaphors, and interactive techniques which can promote user interest, excitement
and satisfying experiences. This is followed by reviewing the design process and design treatments which can promote aesthetic
perception and engaging interaction. The final part of the chapter provides design guidelines and principles drawn from the
interaction and graphical design literature which are cross-referenced to issues in the design process. Examples of designs
and design treatments are given to illustrate principles and advice, accompanied by critical reflection.