Article: Jonathan Haidt on the Epidemic of Mental Illness in Gen Z (REVIEW ESSAY) - The American social psychologist Jonathan Haidt (born in 1963; Ph.D. in social psychology, University of Pennsylvania, 1992) of New York University s Stern School of Business has published a disturbing new book about Gen Z, the generation born after 1995, titled The Anxious Generation: How the Great Rewiring of Childhood Is Causing an Epidemic of Mental Illness (Penguin Random House). He targets smartphones and social media.