CHI '91 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
The cognitive walkthrough method: a practitioner's guide
Usability inspection methods
Affordance, conventions, and design
interactions
More than just a pretty face: affordances of embodiment
Proceedings of the 5th international conference on Intelligent user interfaces
Multimedia Learning
Usability engineering methods for software developers
Communications of the ACM - Interaction design and children
Affordance-Based design of physical interfaces for ubiquitous environments
UCS'06 Proceedings of the Third international conference on Ubiquitous Computing Systems
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Implementation of adequate conversational structures is a key issue in developing successful interactive user interfaces. A way of testing the adequacy of the structures is to prove the correct orientation of each communicative action towards a preceding action. We refer to this orientation leading to a certain response as the affordance of the communicative action. In this paper we present a case study where affordances of implemented conversational structures (including verbal and graphical elements) in a multimodal medical QA system are identified applying Conversation Analysis (CA) tools and tested using the Cognitive Walkthrough (CW) method. The CW method was modified to fit the conversational approach and tested with five expert evaluators. Results showed that the affordance analysis helps detecting inefficient constructions leading to disruptions in the dialog flow, spots unnecessary functions and provides important insights on systems easy-of-use.