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Interest in design and development of interactive software applications has increased considerably over the last few years. The underlying reason for this interest is the need to allow the greatest number of people access to software applications for the largest number of purposes and in the widest number of contexts. However, making systems easier to use implies taking into account many factors in the design of an interactive application, such as tasks to support, context of use, user preferences, media and interaction techniques available, need for multiple dialogues between the user and the application active at the same time. It is thus important to have structured methods for allowing designers to manage such complexity.
KeywordsUsability Evaluation Task Analysis Task Model Interactive Application Task Pattern
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