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Library Usability Links 11/7/08

“You have to distinguish between the process of creating a system and testing a system. Mental models are the users cognitive understanding of how a system works e.g. ask somebody to tell you how the internet actually works, and they might come up with some interesting answers – or a TV set. I find that mental models are a theoretical framework rather than something you can use in actual design. Personas are mainly a tool to investigate and get design ideas from the personas point of view and from the personas needs.”

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