Design and Emotion
http://experiencedynamics.blogs.com/site_search_usability/2004/08/

Spillers, Frank
Demystifying Usability
2004

Abstract:

Emotion is one of the strongest differentiators in user experience namely because it triggers unconscious responses to a product, website, environment or interface. Our feelings strongly influence our perceptions and often frame how we think about or refer to our experiences at a later date.