Rethinking the Taiwanese minor marriage data: evidence the mind uses multiple kinship cues to regulate inbreeding avoidance

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Natural experiments such as the Israeli Kibbutzim and Taiwanese minor marriages provide unique opportunities for testing the effects of childhood association on adult sexual attraction. Within these populations, early childhood association leads to the development of a sexual aversion, an effect first proposed by Edward Westermarck. However, recent analysis of Taiwanese minor marriages indicates that only the age at first association (an inverse index of childhood association) of the younger partner predicts marital fertility rates; the age at first association of the older partner does not. Although considered a puzzle, a recent model of human inbreeding avoidance can explain this pattern. This model suggests that the mind uses at least two kinship cues to regulate the development of sibling sexual aversions: (i) childhood coresidence duration, a default cue used mainly by younger siblings in detecting probable older siblings, and (ii) exposure to one's mother caring for a newborn, a cue only available to older siblings and reliable regardless of coresidence duration and, hence, age at first association. Thus, one reason that the age at first association of only the younger partner in minor marriages predicts fertility is that coresidence duration serves as a cue to siblingship mainly for younger partners; older partners use a different kinship cue not influenced by durations of association. When compared to data from psychological investigations of the effects of coresidence duration on opposition to sibling incest, the minor marriage data reveal an identical pattern providing converging lines of evidence that multiple kinship cues mediate sibling detection and inbreeding avoidance in humans.

Original languageEnglish
Pages (from-to)153-160
Number of pages8
JournalEvolution and Human Behavior
Volume30
Issue number3
DOIs
StatePublished - May 1 2009

Fingerprint

inbreeding avoidance
marriage
Inbreeding
kinship
multiple use
Marriage
inbreeding
Cues
Siblings
childhood
duration
Sexual Development
Fertility
fertility
Incest
Consanguinity
Birth Rate
sexual development
Kinship
Taiwanese

Keywords

  • Inbreeding avoidance
  • Kin detection
  • Westermarck hypothesis

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Experimental and Cognitive Psychology

Cite this

@article{cbec44ee7d38436486405a8103eeeec3,
title = "Rethinking the Taiwanese minor marriage data: evidence the mind uses multiple kinship cues to regulate inbreeding avoidance",
abstract = "Natural experiments such as the Israeli Kibbutzim and Taiwanese minor marriages provide unique opportunities for testing the effects of childhood association on adult sexual attraction. Within these populations, early childhood association leads to the development of a sexual aversion, an effect first proposed by Edward Westermarck. However, recent analysis of Taiwanese minor marriages indicates that only the age at first association (an inverse index of childhood association) of the younger partner predicts marital fertility rates; the age at first association of the older partner does not. Although considered a puzzle, a recent model of human inbreeding avoidance can explain this pattern. This model suggests that the mind uses at least two kinship cues to regulate the development of sibling sexual aversions: (i) childhood coresidence duration, a default cue used mainly by younger siblings in detecting probable older siblings, and (ii) exposure to one's mother caring for a newborn, a cue only available to older siblings and reliable regardless of coresidence duration and, hence, age at first association. Thus, one reason that the age at first association of only the younger partner in minor marriages predicts fertility is that coresidence duration serves as a cue to siblingship mainly for younger partners; older partners use a different kinship cue not influenced by durations of association. When compared to data from psychological investigations of the effects of coresidence duration on opposition to sibling incest, the minor marriage data reveal an identical pattern providing converging lines of evidence that multiple kinship cues mediate sibling detection and inbreeding avoidance in humans.",
keywords = "Inbreeding avoidance, Kin detection, Westermarck hypothesis",
author = "Debra Lieberman",
year = "2009",
month = "5",
day = "1",
doi = "10.1016/j.evolhumbehav.2008.11.003",
language = "English",
volume = "30",
pages = "153--160",
journal = "Evolution and Human Behavior",
issn = "1090-5138",
publisher = "Elsevier Inc.",
number = "3",

}

TY - JOUR

T1 - Rethinking the Taiwanese minor marriage data

T2 - evidence the mind uses multiple kinship cues to regulate inbreeding avoidance

AU - Lieberman, Debra

PY - 2009/5/1

Y1 - 2009/5/1

N2 - Natural experiments such as the Israeli Kibbutzim and Taiwanese minor marriages provide unique opportunities for testing the effects of childhood association on adult sexual attraction. Within these populations, early childhood association leads to the development of a sexual aversion, an effect first proposed by Edward Westermarck. However, recent analysis of Taiwanese minor marriages indicates that only the age at first association (an inverse index of childhood association) of the younger partner predicts marital fertility rates; the age at first association of the older partner does not. Although considered a puzzle, a recent model of human inbreeding avoidance can explain this pattern. This model suggests that the mind uses at least two kinship cues to regulate the development of sibling sexual aversions: (i) childhood coresidence duration, a default cue used mainly by younger siblings in detecting probable older siblings, and (ii) exposure to one's mother caring for a newborn, a cue only available to older siblings and reliable regardless of coresidence duration and, hence, age at first association. Thus, one reason that the age at first association of only the younger partner in minor marriages predicts fertility is that coresidence duration serves as a cue to siblingship mainly for younger partners; older partners use a different kinship cue not influenced by durations of association. When compared to data from psychological investigations of the effects of coresidence duration on opposition to sibling incest, the minor marriage data reveal an identical pattern providing converging lines of evidence that multiple kinship cues mediate sibling detection and inbreeding avoidance in humans.

AB - Natural experiments such as the Israeli Kibbutzim and Taiwanese minor marriages provide unique opportunities for testing the effects of childhood association on adult sexual attraction. Within these populations, early childhood association leads to the development of a sexual aversion, an effect first proposed by Edward Westermarck. However, recent analysis of Taiwanese minor marriages indicates that only the age at first association (an inverse index of childhood association) of the younger partner predicts marital fertility rates; the age at first association of the older partner does not. Although considered a puzzle, a recent model of human inbreeding avoidance can explain this pattern. This model suggests that the mind uses at least two kinship cues to regulate the development of sibling sexual aversions: (i) childhood coresidence duration, a default cue used mainly by younger siblings in detecting probable older siblings, and (ii) exposure to one's mother caring for a newborn, a cue only available to older siblings and reliable regardless of coresidence duration and, hence, age at first association. Thus, one reason that the age at first association of only the younger partner in minor marriages predicts fertility is that coresidence duration serves as a cue to siblingship mainly for younger partners; older partners use a different kinship cue not influenced by durations of association. When compared to data from psychological investigations of the effects of coresidence duration on opposition to sibling incest, the minor marriage data reveal an identical pattern providing converging lines of evidence that multiple kinship cues mediate sibling detection and inbreeding avoidance in humans.

KW - Inbreeding avoidance

KW - Kin detection

KW - Westermarck hypothesis

UR - http://www.scopus.com/inward/record.url?scp=64049109890&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=64049109890&partnerID=8YFLogxK

U2 - 10.1016/j.evolhumbehav.2008.11.003

DO - 10.1016/j.evolhumbehav.2008.11.003

M3 - Article

AN - SCOPUS:64049109890

VL - 30

SP - 153

EP - 160

JO - Evolution and Human Behavior

JF - Evolution and Human Behavior

SN - 1090-5138

IS - 3

ER -