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Contextual Design, 2nd Edition by Hugh Beyer, Karen Holtzblatt

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17

Validating the Design

Abstract

Testing is an important part of any product's development process, and it's generally accepted that the sooner problems are found, the less it costs to fix them. Rough paper prototypes of the product design test the structure and user interface ideas before anything is committed to code. Paper prototypes, now a well-known, documented practice, support continuous iteration of the new product, keeping it true to the user and giving designers a data-based way of resolving disagreements. In prototyping sessions, users and designers redesign the mockup together to better fit the user's activities. In Contextual Design we use a combination of paper mockups, online mockups, and early versions of running code to get the ...

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