21. Seldon developed psychohistory to predict the actions of large groups of " humans ". 22. His contributions are in the fields of medieval history, psychohistory , and early American history. 23. Asimov's psychohistory ( fictional ) is rarely, if ever, mentioned in academic circles. 24. He joined the Psychohistory Forum in the mid 1980s, becoming a recognizable intellectual in the community. 25. It depicts how Seldon developed his theory of psychohistory from hypothetical concept to practical application in galactic events. 26. But Waite never contended that so-called psychohistory provided a full explanation, much less the only one. 27. In " A Psychohistory of Metaphors : Envisioning Time, Space, and Self through the Centuries" 28. Finally, multiculturalism and cultural relativism have been fiercely attacked by American social thinker Lloyd deMause, founder of psychohistory . 29. Somewhat later, the term " psychohistory " was applied by others to research of the effects of psychology on history. 30. For examples of the more frivolous and distasteful sort of psychohistory , see " The Journal of Psychohistory ".