This is the second edition of Amador and David's enormously influential book and contains much new material - notably on neuropsychological research and the clinical relevance of stakeholders, including service users and carers. The quality of the papers is outstanding: in particular Jolley and Gartey on cognitive psychological approaches to delusions, Fulford's philosophical analysis, Torrey on violence and insight, McEvoy on compliance with medication and Frese's first-person perspective. Reading this book has changed my understanding of the concept of insight. I can no longer think of it simply as agreeing with the doctor. This is a book that should be read by all mental health professionals. Carers and service users, and those who work in philosophy or the social sciences and are interested in disability, awareness, and mental health, would also find it of interest.