A physicist.[ref]
Professional profile of Dieter Haidt. 23 September 2011, Dieter Haidt gewinnt Enrico-Fermi-Preis: explicitly identifies the DESY physicist
Articles by others on the same topic
It seems like you might be referring to Jonathan Haidt, an American social psychologist and author known for his work on the psychology of morality, social behavior, and the dynamics of culture and politics. He is a professor at New York University and has written several influential books, including "The Righteous Mind: Why Good People Are Divided by Politics and Religion" and "The Coddling of the American Mind" (co-authored with Greg Lukianoff).