Four universities have offered a course in Psychohistory at the undergraduate level and have published course details: Boston University, Binghamton University, City University of New York and Wesleyan University.
The idea of social thermodynamics shows some similarities to the fictional science of psychohistory in Isaac Asimovs Foundation series.
At the end of the book, it was suggested that the Solarians had modified themselves so much that they no longer counted as human, and that their behavior could no longer be predicted by psychohistory, necessitating the creation of Galaxia.
He applied his knowledge of psychology and history in the 1978 article, "Becoming Sane with Psychohistory" in The Historian.
This concept is elaborated somewhat in Isaac Asimov's Foundation series, where "psychohistory" is used to predict and manipulate social and political developments.