Download or read book How Sadness Survived written by Paul Keedwell and published by Radcliffe Publishing. This book was released on 2008 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing on evolutionary psychology to argue that depression has a useful function, this book offers insight into the true nature of depression, its causes, consequences and possible benefits. It is fully referenced, with definitions for technical terms, and tables, illustrations and diagrams to aid comprehension.