10 research outputs found

    Systems Analysis Department annual progress report 1999

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    The evaluator effect during first-time use of the cognitive walkthrough technique

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    Practising system developers without a human factors background need robust, easy-to-use usability evaluation methods. The cognitive walkthrough (CW) technique (Lewis et al. 1990, Wharton et al. 1994) has been devised to provide such a method and is particularly suited to evaluate designs before testing wit

    Developer Driven and User Driven Usability Evaluations

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    TECNICA PARA LA MEDICION DE USABILIDAD DURANTE LA ETAPA DE DISEÑO MEDIANTE LA SEPARACION DE DETALLES ARQUITECTONICOS Y TECNOLOGICOS EN LA EDUCCION DE REQUERIMIENTOS

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    ESTADO DEL ARTE MARCO CONCEPTUAL MÉTODOS DE USABILIDAD PROCESOS DE DISEÑO DE INTERFACES GRÁFICOS DE USUARIO MÉTODOS DE INSPECCIÓN MÉTODOS DE PROTOTIPADO Y CATEGORIZACIÓN INTRODUCCIÓN TÉCNICA PROPUESTA PROPUESTA FASE DE DEFINICIÓN Y EDUCCIÓN DE REQUISITOS FASE DE ELICITACIÓN DE REQUISITOS FASE DEL ANÁLISIS HEURÍSTICO FASE DEL USUARIO FINAL FASE DE RESPUESTAS CASO DE ESTUDIO EVALUACIÓ

    The Integrated User Experience Evaluation Model: A Systematic Approach To Integrating User Experience Data Sources

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    Evaluating the user experience (UX) associated with product interaction is a challenge for current human-systems developers. This is largely due to a lack of theoretical guidance for directing how best to assess the UX and a paucity of tools to support such evaluation. This dissertation provided a framework and tools for guiding and supporting evaluation of the user experience. This doctoral research involved reviewing the literature on UX, using this knowledge to build first build a theoretical model of the UX construct and later develop a theoretical model to for the evaluation of UX in order to aid evaluators – the integrated User eXperience EValuation (iUXEV), and empirically validating select components of the model through three case studies. The developed evaluation model was subjected to a three phase validation process that included the development and application of different components of the model separately. The first case study focused on developing a tool and method for assessing the affective component of UX which resulted in lessons learned for the integration of the tool and method into the iUXEV model. The second case study focused on integrating several tools that target different components of UX and resulted in a better understanding of how the data could be utilized as well as identify the need for an integration method to bring the data together. The third case study focused on the application of the results of an usability evaluation on an organizational setting which resulted in the identification of challenges and needs faced by practitioners. Taken together, this body of research, from the theoretically-driven iUXEV model to the newly developed emotional assessment tool, extends the user experience / usability body of knowledge and state-of-practice for interaction design practitioners who are challenged with holistic user experience evaluations, thereby advancing the state-of-the-art in UX design and evaluation

    Designing Decision Aids for Digital Service Design Technique Selection

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    Today, people from a multi-disciplinary background are becoming involved in digital service design processes. With the increasing number of digital service design processes in organizations, it is becoming critical to quickly onboard design novices. A huge amount of design techniques is available in digital service design processes. However, too-much-choice makes the selecting process difficult. Thus, selecting appropriate techniques is a challenge, especially for design novices. This dissertation project focuses on providing decision support for design novices to select design techniques in design processes. Several artifacts in the form of different types of classifications and web-based platforms were developed as decision aids seeking to guide novices to select design techniques in digital service design processes. A design science research paradigm was followed, and three design cycles were conducted in the entire dissertation project. Artifacts were developed and evaluated in each design cycle. In design cycle 1, an expert-based taxonomy and a set of novice-based tags were derived. In design cycle 2, the taxonomy and tags were instantiated as decision aids in a web-based platform and evaluated in a lab experiment. The evaluation demonstrated that the expert-based taxonomy outperformed the novice-based tags. In design cycle 3, an extended version of the web-based platform was developed, including a natural language user interface (UI) in combination with the taxonomy to provide selection support for design techniques. The results of the experimental evaluation of cycle 3 demonstrated that novices’ performance using graphical and natural language UI was dependent on decision-making style and duration of use. The work presented in this thesis contributes to the body of knowledge in the field of digital service design. In design cycle 1, the created taxonomy represents a theory for analysis (type I theory). In design cycle 2 and 3, the proposed design principles represent the core of a theory for design and action (type V theory) to guide the design of decision aids for supporting design novices’ selection of design techniques. Besides the theoretical contribution, the developed platform for the selection of design techniques contributes practically to help design novices select design techniques under different design situations

    Improving usability outcomes in IS projects: the views of usability practitioners

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    What are the key aspects to achieving acceptable usability outcomes for information systems being developed? The changing technologies and increased usage across the general population, the impacts of this in our everyday lives, at work and at leisure are exponentially increasing. The interfaces and interaction styles presented as part of these technologies have been challenged to be more intuitive, contextually sensitive, location aware, human centred and aimed at a larger community of stakeholders. Performing usability activities is an increasingly important part of the development of new technologies, applications and websites. This study examined, for Information System projects, what were the key aspects that impacted on the usability outcome of developing Information Systems. This study presents a theory that describes how projects can improve their usability outcomes. This has emerged from interviews with experienced usability practitioners currently working in the usability industry. The transcripts from the qualitative interviews were analysed using a grounded theory methodology, which was an inductive and interpretive process in nature. The result of this analysis produced twenty-seven key concepts. These concepts were compared and contrasted against the literature. The theory that emerged consists of four major themes that included: usability mindset, collaborative approach, project constraints and usability practice. The key contribution to knowledge is the relationship concept between these themes. This is the nurturing of the usability mindset for the project stakeholders through involvement in usability activities throughout the project lifecycle. This engagement provides opportunities to elicit, understand and concord the usability goals, project constraints and the technological limitations with project stakeholders. The involvement of all project stakeholders promotes usability value and acceptance, which ideally progresses to a shared usability vision for the project and ultimately a usability mindset that can be utilised beyond a specific project and across an organisation
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