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Contributions to Web Accessibility: Device-tailored Evaluation, User-tailored Interface Generation and the Interplay with User Experience

by Aguirrezabal Amaia Aizpurua

Institution: Euskal Herriko Unibertsitatea / Universidad del Pas Vasco
Department:
Degree:
Year: 2017
Keywords: information systems; design and components; handicapped; sistemas de informacin; diseo y componentes
Posted: 2/1/2018 12:00:00 AM
Record ID: 2153512
Full text PDF: http://hdl.handle.net/10810/22630


Abstract

AbstractThe Web has an incredible importance in our modern society and for many people it has become a fundamental part of their lives. It enables us to Access a huge amount of information, and use a wide range of services related to diverse areas of our daily activities, which has the potential of making our lives easier. Its ubiquitous nature and advances in mobile devices have led to the possibility of accessing the Web any time and from anywhere. This has numerous and obvious advantages, but at the same time it poses challenges related to the Universal Design (UD), as websites need to adapt to the existing diversity of users, devices and interaction contexts. For instance, to ensure the accessibility of a website, in addition to the human diversity, the features of the existing computing devices with access to the Internet, as well as features of the environment where the interaction will occur have to be considered. Similarly, this information can be used when checking the accessibility of websites, so that evaluations are closer to what users are really experiencing when accessing the websites.In this thesis a device tailored web accessibility evaluation framework and an automated web-based user tailored interface generator are presented. The evaluation framework deals with device specific information. Empiricaldata showed that more accurate and reliable accessibility reports are obtained in comparison to performing evaluations that do not consider device specific information. The interface generator takes into consideration information about users and their interaction context, in order to adapt web based user interfaces. From the conducted case study it was concluded that the automatically generated user tailored user interfaces were fully operable.These two tools can be of great help for web developers to create and maintain accessible content for a wide range of users and interaction contexts. Accessible and adapted user interfaces do not necessarily provide users with an enhanced experience though. With the aim of investigating how accessible user interfaces influence the experience of users and understanding if accessibility is related to a better user experience, a user testing was conducted. In order to investigate this relationship, data from 11 participants was elicited about their subjective accessibility perceptions and their user experience with four websites with different levels of accessibility. Results showed that participants user experience and their perceived web accessibility are closely related. In addition, web accessibility is correlated to three attributes (typical - original, conservative - innovative, lame - exciting) of the hedonic quality stimulation dimension of the user experience. These findings provide the web community with additional knowledge about the interactions between the user experience and web accessibility. LaburpenaWeb-ak izugarrizko garrantzia dauka gure gaur egungo gizartean, eta persona askorentzat beraien bizitzan funtsezkoa bihurtu da. Web-ak informazioAdvisors/Committee Members: Vigo Echebarria, Markel (advisor), Arrue Recondo, Myriam (advisor).

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