The quantitative genetics of disgust sensitivity

Sherlock, James M., Zietsch, Brendan P., Tybur, Joshua M. and Jern, Patrick (2016) The quantitative genetics of disgust sensitivity. Emotion, 16 1: 43-51. doi:10.1037/emo0000101


Author Sherlock, James M.
Zietsch, Brendan P.
Tybur, Joshua M.
Jern, Patrick
Title The quantitative genetics of disgust sensitivity
Journal name Emotion   Check publisher's open access policy
ISSN 1931-1516
1528-3542
Publication date 2016-02-01
Year available 2015
Sub-type Article (original research)
DOI 10.1037/emo0000101
Open Access Status Not Open Access
Volume 16
Issue 1
Start page 43
End page 51
Total pages 9
Place of publication Washington, DC, United States
Publisher American Psychological Association
Collection year 2016
Language eng
Formatted abstract
Response sensitivity to common disgust elicitors varies considerably among individuals. The sources of these individual differences are largely unknown. In the current study, we use a large sample of female identical and nonidentical twins ( N = 1,041 individuals) and their siblings (N = 170) to estimate the proportion of variation due to genetic effects, the shared environment, and other (residual) sources across multiple domains of disgust sensitivity. We also investigate the genetic and environmental influences on the covariation between the different disgust domains. Twin modeling revealed that approximately half of the variation in pathogen, sexual, and moral disgust is due to genetic effects. An independent pathways twin model also revealed that sexual and pathogen disgust sensitivity were influenced by unique sources of genetic variation, while also being significantly affected by a general genetic factor underlying all 3 disgust domains. Moral disgust sensitivity, in contrast, did not exhibit domain-specific genetic variation. These findings are discussed in light of contemporary evolutionary approaches to disgust sensitivity.
Keyword Behavioral genetics
Evolutionary psychology
Individual variation
Pathogen threat
Sexual strategies
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Published online 5 October 2015

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Psychology Publications
 
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