If you were familiar with his background you wouldn't be writing this comment, which makes what you wrote a bit awkwardly ironic.

Short of it: 30-ish year career as a psychology professor and researcher focused on morality and emotions. If you follow the track of his popular science books, The Anxious Generation (on smartphone use in teens) is very much a sequel to The Coddling of the American Mind, which itself is something of a sequel to The Righteous Mind, and so on. There's a very clear linearity and progression to his works.