Why Aren’t We Happier?

Experiences of mental illness are common in the United States and behind each individual case is a history. In his book, Good Reasons for Bad Feelings: Insights from the Frontier of Evolutionary Psychiatry, Randolph Nesse, the director of the Center for Evolution and Medicine at Arizona State University, looks at emotional and mental disorders from an evolutionary perspective, and considers why natural selection left us with fragile minds.