Quantifying cultural macro-evolution: a case study of the hinoeuma fertility drop

Kohei Tamura, Yasuo Ihara

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Understanding patterns and underlying processes of human cultural diversity has been a major challenge in evolutionary anthropology. Recent developments in the study of cultural macro-evolution have illuminated various novel aspects of cultural phenomena at the population level. However, limitations in data availability have constrained previous analyses to use simplest models ignoring factors that potentially affect cultural evolutionary dynamics. Here, we focus on two such factors: accumulated effects of cultural transmission between populations over time and variation in social influence among populations. As a test case, we analyze data on the hinoeuma fertility drop, the Japanese nation-wide drastic decline in the number of births caused by a culturally-transmitted superstition recurring every sixty years, to show that these factors do play significant roles. Specifically, our results suggest that transmission of the superstition in a short timescale has tended to occur among neighboring populations, while transmission in a long timescale is likely to have occurred between populations culturally close to each other, with the cultural closeness being measured by similarity in dialects. The results also indicate a special role played by a population occupying a center in a language–distance network (the cultural center) in the spread of the superstition.

本文言語English
ページ(範囲)117-124
ページ数8
ジャーナルEvolution and Human Behavior
38
1
DOI
出版ステータスPublished - 2017 1 1

ASJC Scopus subject areas

  • 生態、進化、行動および分類学
  • 実験心理学および認知心理学
  • 人文科学(その他)

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