100 Things Every Designer Needs to Know About People by Susan Weinschenk
This book unnecessarily limits its target audience to UI and website designers when so much of the content is also valuable to non-designers and "normal" people.
The author does a good job of preparing and delivering small snippets of information, backed with results from research and garnished with pointers to more information. A broad range of topics is covered here, many of which are only partially (or even not at all) related to design. Ever wondered why frequent buyer cards are so addictive? In this book, you'll learn why and how to use that, for example.
The only question left unanswered is how to best consume this book. With 100 short chapters and vastly different topics, it's not exactly made to be read like a book. It's probably better to digest it in smaller portions, e.g. one per day or one of the meta topics ("How People See", "What Motivates People", etc.) at once.
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