Defining and Structuring the Dimensions of User Experience with Interactive Products

The goal of this research is to define the dimensions of User Exprience (UX) with interactive products and systems in order to lay the ground for the construction of a subjective assessment tool for UX. After defining UX, we describe several characteristics of UX and present key elements of some UX models in order to understand the ins and outs and the process of UX. Then we present the results of two empirical studies wherein 77 persons were asked to tell UX stories with products. From their stories we extracted 12 UX dimensions which can be grouped around two poles : Product and User. Thereafter we present the underpinning model and an outline of a new UX subjective assessment tool based on the assessment model of NASA-TLX, a well-known tool for assessing mental workload. As conclusion, we indicate the next steps of the construction and validation of the new tool.