Taking their cue from the arguments of Espinas, Imanishi proposed four prerequisites necessary for the formation of the human family:
- Exogamy*
- Taboo on inbreeding
- Sexual division of labor (roles)
- Formation of communities that include multiple families
Imanishi and his colleagues anticipated that gorilla societies would have all of the above prerequisites, except for the third: the division of labor.
■References (Books, papers, Web articles, etc.)
今西錦司(1961)「人間家族の起源―プライマトロジーの立場から」、民族学研究, 25: 119-138.
「生物社会学・人類学から見た家族の起源」 伊谷純一郎(『講座家族第1巻:家族の歴史』1~17ページ所収 青山道夫ほか編 (弘文堂、1973))
『家族の起源―父性の登場』 山極寿一 (東京大学出版会、1994)
*Exogamy: to mate only with individuals from outside one’s own social group.
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