This is a mandatory book for me. As a HCI phd student, I would like to introduce this book to other students. It can systematically let you know how social science can help you in your research, HCI in particular.
It is a nice book. It covers a lot of aspects in HCI research. I gave 3 stars because the book tries to cover as much fields as possible that results in a thin Introduce of case studies, ethnography, and so on.