Experience has become the new paradigm of product design. Designers seek to anticipate emotions or associations a user might have when in contact with their design. The factors that influence human product perception are diverse. We firstly show which product dimensions are currently investigated by design researchers. It becomes obvious that besides the usual suspects: form and colour, emotion and associations, there must be many others. We conducted a study to identify these and to estimate their pertinence in actual product conception. Word-based techniques like retrospective verbalization and mind mapping were employed. Semantic descriptors, analogies, and functionalities were highly represented. Sensations and emotions did only appear marginally among the abstract dimensions. The same low occurrence was seen for production procedures among the concrete dimensions. Other interesting dimensions found were interaction gestures, design motifs, and product components. An additional analysis of the participant mind maps on relations between the various dimensions showed many connections between e.g. material and texture or semantics and colour. Yet, these were rarely related to sensations and emotions. The insights widen the perspective on unexploited opportunities for design researchers to develop further conception strategies that allow the anticipation of user experience in product design.
RESUMELa notion d'utilisabilité est peu à peu devenue une référence incontournable pour la conception et l'évaluation des interactions homme-machine. Cette approche a effectivement contribué à une amélioration de la facilité d'utilisation des interfaces. Pour les équipes de conception souhaitant se différencier par la qualité d'utilisation, de nouveaux domaines de recherche sont à explorer, et la question du ressenti émotionnel des utilisateurs est devenue peu à peu prépondérante. La recherche présentée dans cet article se situe dans ce cadre. Notre hypothèse générale est que certaines stratégies de design peuvent susciter un ressenti positif de l'utilisateur et améliorer ainsi l'attractivité de l'interface. Notre travail vise à contribuer aux « bonnes pratiques » de design d'interfaces sur la base de mesures de l'impact émotionnel de certaines stratégies de design. Dans ce but, nous considérons tout d'abord les méthodes de mesure de l'émotion présentées dans de précédents travaux relatifs au design-produit. Certaines de ces méthodes sont ensuite testées afin de répondre plus particulièrement aux caractéristiques spécifiques d'une expérience d'utilisation d'une interface. Une méthode associant différentes mesures complémentaires de l'émotion, synchrones/asynchrones, objectives/subjectives, sera ainsi envisagée.
Mots ClésDesign émotionnel ; design d'interface ; mesure des émotions.
ABSTRACTUsability has become a major notion for the conception and the evaluation of human-computer interactions. In order to push forward the quality of use, new areas of research are to be explored, and the question of endusers' emotions has become preponderant. Our view is to contribute to better ways to design and evaluate interfaces, by measuring the emotional impact of specific design strategies. In this paper, we discuss of emotional measurement methods which would fit the requirements of an interface use experience. Thus, we combine synchronous./asynchronous, objective/subjective complementary measures.
ACM Classification KeywordsHCI design and evaluation methods, User models, Interaction design process and methods.
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