1. It should be noted that Wundt's title was “Völkerpsychologie”. The associative meanings of “folk” and “Völker” are not identical for speakers of English and German.
2. I am grateful to Glendon Drake for drawing my attention to these indirect links.
3. The expression of the emotions in man and animals;Darwin,1872
4. On the varieties of social psychology: an essay on the relationship between psychology and other social sciences;Farr;Social Science Information,1978
5. Homo socio-psychologicus;Farr,1979