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

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Quantifying cultural macro-evolution : a case study of the Hinoeuma fertility drop. / Tamura, Kohei; Ihara, Yasuo.

In: Evolution and Human Behavior, 06.08.2016.

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Tamura, Kohei ; Ihara, Yasuo. / Quantifying cultural macro-evolution : a case study of the Hinoeuma fertility drop. In: Evolution and Human Behavior. 2016.

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@article{5920a46b0d5c418082110585abeb9ab5,
title = "Quantifying cultural macro-evolution: a case study of the Hinoeuma fertility drop",
abstract = "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.",
keywords = "cultural evolution, cultural macro-evolution, cultural transmission network, cultural load",
author = "Kohei Tamura and Yasuo Ihara",
year = "2016",
month = "8",
day = "6",
doi = "10.1016/j.evolhumbehav.2016.07.007",
language = "English",
journal = "Evolution and Human Behavior",
issn = "1090-5138",
publisher = "Elsevier Inc.",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Quantifying cultural macro-evolution

T2 - a case study of the Hinoeuma fertility drop

AU - Tamura, Kohei

AU - Ihara, Yasuo

PY - 2016/8/6

Y1 - 2016/8/6

N2 - 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.

AB - 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.

KW - cultural evolution

KW - cultural macro-evolution

KW - cultural transmission network

KW - cultural load

U2 - 10.1016/j.evolhumbehav.2016.07.007

DO - 10.1016/j.evolhumbehav.2016.07.007

M3 - Article

JO - Evolution and Human Behavior

JF - Evolution and Human Behavior

SN - 1090-5138

ER -