The most important component to design properly is … the user’s conceptual model. Everything else should be subordinated to making that model clear, obvious and substantial. That is almost exactly the opposite of how most software is designed.

David Liddle, lead designer of the Xerox Star system (1996)


This chapter defines the discipline of information architecture and discusses some of its key concepts. We examine five different ways in which information can be organised and present the LATCH mnemonic for remembering them. We describe how to do card sorting, an objective method for ensuring that we organise the content and functions of a user interface in a way that makes sense to users. We discuss ...

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