User experience design is the discipline of creating a useful and usable Web site or application that's easily navigated and meets the needs of the site owner and its users. There's a lot more to successful UX design than knowing the latest Web technologies or design trends: It takes diplomacy, management skills, and business savvy. That's where the updated edition of this important book comes in.

With new information on design principles, mobile and gestural interactions, content strategy, r...

User interface (UI) design rules and guidelines, developed by early HCI gurus and recognized throughout the field, were based on cognitive psychology (study of mental processes such as problem solving, memory, and language), and early practitioners were well informed of its tenets. But today practitioners with backgrounds in cognitive psychology are a minority, as user interface designers and developers enter the field from a wide array of disciplines. HCI practitioners today have enough expe...