The Persona Lifecycle: Keeping People in Mind Throughout Product Design (repost)

A field guide exclusively focused on interaction design's most popular new technique.
Review
"Personas personified. The definitive word on why personas are better than people in guiding your designs. Filled with case histories, sidebars, and helpful, useful guidelines as well as deep, penetrating analyses. A big book, and for reason. This book is unique in that it is truly for everyone: the practitioner, the researcher, and the teacher. Did I say this was essential reading? Well, it is: if you use personas, if you have thought about using them, if you don't even know what they are, this is the book for you." - Don Norman, author of Emotional Design and The Design of Everyday Things