Contributions to the History of Psychology: XVI. Eponymy in Psychology: Early versus Recent Textbooks
A survey was conducted on the frequency of usage of psychologists' names in early introductory psychology textbooks (1920–1939) and recent introductory psychology textbooks (1968–1971) in order to assess differences between these periods. Using eponymy indexes, such as naming ratios which were derived from frequency of naming divided by textbook pages, a methodology was developed for comparing early and recent textbooks. Results showed that: (1) the average naming ratio for early textbooks was significantly lower than the ratio for recent textbooks; (2) there were significant differences in naming between early and recent textbooks in terms of various chapter headings and subject materials; and (3) there were significant differences in naming particular psychologists, e.g., Freud and Pavlov, with greater frequency occurring in the recent over the early textbooks. Results were discussed within the context of E. G. Boring's writings concerning eponymy and the future state of psychology.