____ design is an iterative design process framework that incorporates validation from the user every step of the way. The first step of the user-centered design process is the ____ research. In the user-centered design process you need to specify your users and business ____. When you specify requirements, you identify user needs and ____ for success. ____ means going back to step one and starting the user-centered design process over. When a product meets your users’ needs and your goals, you can ____ it.

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