'What I am offering is a critical overview of ideas about depression, some new, some old, which fall under the discipline of 'evolutionary psychology' (EP). Do most types of depression represent an adaptation - an evolved mechanism which has improved our survival and reproductive value in our ancestral environment? Has depression be selected? Could it still be usseful to us today? This book makes a contribution to the field while communicating the issues to a wider audience that EP currently receives and deserves. There are important implications for how we should prevent or treat...