Experiential interaction: Design and evaluation Antonella De Angeli Department of Information Engineering and Computer Science - University of Trento

Objective Understand what dimensions make a system attractive Attractiveness = free choice of use How the multiple dimensions of experiences combine into summary judgments and decisions about use? How experiences evolve over time Use this knowledge to shape the design of new experiential interactions

Hedonic Task Pragmatic Symbolic Environment Time Motivations Attitudes Needs Knowledge

Effects of design metaphors on attractiveness Study III Study 1 Study 1I

Framing Attribute Framing: Levin 1987, Levin and Gaeth 1988 A focus on positive vs. negative aspects of objectively equivalent information affects judgement

User characteristics Attitudes towards brand affect the perception of Pragmatic qualities Task-related Functionality, usability Hedonic qualities Sensorial experience Beauty, engagement Symbolic qualities Information quality Meaning and association elicited by the system Brand loyalty, attributions, identification

Religious commitment Results Religion influences the values of many individuals People who are strongly committed tend to evaluate the world through the lens of religious beliefs Evaluation is biased by the degree of identity between a stimulus and religious beliefs: match is preferred

Key web-sites dimensions Information-Quality Usability Aesthetics Symbolism