1. Plural of psychohistory; the study of historical events and figures through the lens of psychological analysis and motivation.
Usage: academic; scholarly
2. In science fiction, particularly Isaac Asimov's Foundation series, a fictional science that uses psychology and statistics to predict the behavior of large populations and the course of history.
Usage: science fiction; literary

Examples

• Scholars have written several psychohistories examining the psychological factors behind Napoleon's military decisions.
• The professor assigned readings on psychohistories of famous political leaders to understand their motivations.
• In Asimov's novels, psychohistories allow the Foundation to predict and shape the future of the galactic empire.
• Modern psychohistories often blend historical research with insights from developmental psychology.
• The book explores psychohistories of artists, analyzing how their personal trauma influenced their creative work.