Full record for psychohistory n.
| Definition | the theory that the history of large populations is statistically predictable, based on psychological theories of human and social behaviour; science based on this theory |
| OED requirements | antedating 1942 |
| Earliest cite | I. Asimov in Astounding Sci. Fiction June |
| Comment | There are prior non-sf usages, but this is almost certainly the first usage in the sf sense. |
| Last modified | 6 July, 2008 |