Jonathan Haidt is an American social psychologist and author. His main areas of study are the psychology of morality and moral emotions. Haidt has written several best-selling books for general audiences, including The Happiness Hypothesis (2006) examining the relationship between ancient philosophies and modern science, The Righteous Mind (2012) on moral politics, and The Coddling of the American Mind (2018) on rising political polarisation, mental health, and college culture. In 2024, he published The Anxious Generation, arguing that the rise of smartphones and overprotective parenting have led to a "rewiring" of childhood and a rise in mental illness.