“User sensitive inclusive design”— in search of a new paradigm
CUU '00 Proceedings on the 2000 conference on Universal Usability
IHM '02 Proceedings of the 14th French-speaking conference on Human-computer interaction (Conférence Francophone sur l'Interaction Homme-Machine)
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In order to evaluate two conceptually different voice mail systems, we developed a method of analysis relying on the user's memorisation of information rather than on his or her performances and understanding of the service's functionalities. After having analysed the interfaces and according to the rules of the "inclusive design" approach, we confronted blind participants with two interfaces (one already existing interface, the other one based on a new model of interactions). The freedom of navigation and action given to the participants in the voice mail systems, as well as the natural character of the messages created to test the interface, gave this experiment a high degree of ecological validity. The experimental design's goal was to test the effects of the distribution of information within or between messages. This design allowed the uncovering of behaviours aiming at dampening the fugacity and irreversibility of voice messages. The importance of functionalities dealing with temporal constraints, information retention as well as the modalities of interactions with the systems has therefore been proved.