Towards a Walkthrough Method for Universal Access Evaluation

摘要

This paper presents a walkthrough evaluation method for assessing, in a Universal Access perspective, interactive systems. The methodology is an adaptation of the traditional cognitive walkthrough used for many years in the usability engineering community. Cognitive walkthrough involves a simulation of the problem-solving process of an average user, to ensure that the user can easily learn to perform tasks that the system is indented to support. The proposed method, described here in brief along with the underlying theoretical framework, extends this approach by: (a) involving a simulation of the users' reasoned action process, to ensure that users will be in favour of accessing, exploring, utilising, and, ultimately, adopting the system; (b) addressing the diverse needs of all users, rather than of the average user, thus incorporating accessibility for all target users as an intrinsic measurement. A set of printed forms with specific questions reflecting the proposed methodology has been developed to guide the new walkthrough procedure. Early experiences with the application of the method in the domain of eServices are also discussed.