Herd Instinct in Humans: The Source of Anxiety and Depression?

Jeffrey Kahn has written a fascinating book (Angst: Origins of Anxiety and Depression in Oxford Press) suggesting an evolutionary source for much of human psychopathology. He gave a Grand Rounds presentation at UCLA in February of 2015 that outlined some of his theories and that presentation has been the subject of a vigorous discussion online. In essence, Jeffrey argues that …