The Westermarck effect revisited: a psychophysiological study of sibling incest aversion in young female adults

Smet, Dieter De; Speybroeck, Linda Van; Verplaetse, Jan

doi:10.1016/j.evolhumbehav.2013.09.004

Cited by 32 publications

(22 citation statements)

References 26 publications

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“…Furthermore, although our work relied upon self-report, earlier work reporting support for the Compensatory Prophylaxis Hypothesis also used selfreport (e.g., Fleischman & Fessler, 2011). That said, studies using psychophysiological measures of disgust sensitivity (see, e.g., De Smet, Van Speybroeck, & Verplaetse, 2014) could yet reveal hormone-linked changes in disgust sensitivity that are not evident in analyses of selfreport measures.…”

Section: Discussionmentioning

confidence: 99%

Hormonal correlates of pathogen disgust: testing the compensatory prophylaxis hypothesis

Jones

Hahn

Fisher

et al. 2018

Evolution and Human Behavior

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a b s t r a c t a r t i c l e i n f oRaised progesterone during the menstrual cycle is associated with suppressed physiological immune responses, reducing the probability that the immune system will compromise the blastocyst's development. The Compensatory Prophylaxis Hypothesis proposes that this progesterone-linked immunosuppression triggers increased disgust responses to pathogen cues, compensating for the reduction in physiological immune responses by minimizing contact with pathogens. Although a popular and influential hypothesis, there is no direct, within-woman evidence for correlated changes in progesterone and pathogen disgust. To address this issue, we used a longitudinal design to test for correlated changes in salivary progesterone and pathogen disgust (measured using the pathogen disgust subscale of the Three Domain Disgust Scale) in a large sample of women (N = 375). Our analyses showed no evidence that pathogen disgust tracked changes in progesterone, estradiol, testosterone, or cortisol. Thus, our results provide no support for the Compensatory Prophylaxis Hypothesis of variation in pathogen disgust. Crown

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Section: Discussionmentioning

confidence: 99%

Hormonal correlates of pathogen disgust: testing the compensatory prophylaxis hypothesis

Jones

Hahn

Fisher

et al. 2018

Evolution and Human Behavior

View full text Add to dashboard Cite

show abstract

“…Furthermore, although our work relied upon self-report, earlier work reporting support for the Compensatory Prophylaxis Hypothesis also used self-report (e.g., Fleischman & Fessler, 2011). That said, studies using psychophysiological measures of disgust sensitivity (see, e.g., De Smet et al, 2014) could yet reveal hormone-linked changes in disgust sensitivity that are not evident in analyses of self-report measures.…”

Section: Discussionmentioning

confidence: 99%

Hormonal correlates of pathogen disgust: Testing the Compensatory Prophylaxis Hypothesis

Jones

Hahn

Fisher

et al. 2017

Preprint

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Raised progesterone during the menstrual cycle is associated with suppressed physiological immune responses, reducing the probability that the immune system will compromise the blastocyst's development. The Compensatory Prophylaxis Hypothesis proposes that this progesterone-linked immunosuppression triggers increased disgust responses to pathogen cues, compensating for the reduction in physiological immune responses by minimizing contact with pathogens. Although a popular and influential hypothesis, there is no direct, within-woman evidence for correlated changes in progesterone and pathogen disgust. To address this issue, we used a longitudinal design to test for correlated changes in salivary progesterone and pathogen disgust (measured using the pathogen disgust subscale of the Three Domain Disgust Scale) in a large sample of women (N=375). Our analyses showed no evidence that pathogen disgust tracked changes in progesterone, estradiol, testosterone, or cortisol. Thus, our results provide no support for the Compensatory Prophylaxis Hypothesis of variation in pathogen disgust. ! ! 13 distinct dimensions of political ideology across 30 nations.

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“…Although many previous studies (e.g., Lieberman et al, 2007; Sznycer et al, 2016) found an effect of the duration of coresidence on inbreeding aversion, our study tends to suggest that relationships between siblings are probably much more complicated. It could be interesting to test the influence of other parameters such as the degree of emotional closeness with kin members involved in inbreeding or the activities shared by kin on aversive reactions to inbreeding (De Smet et al, 2014). …”

Section: Discussionmentioning

confidence: 99%

Fitness Costs Predict Emotional, Moral, and Attitudinal Inbreeding Aversion

Lespiau

Kaminski

2016

Front. Psychol.

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In terms of sexual intercourse, the very last people we think about are our kin. Imagining inbreeding intercourse, whether it involves our closest kin or not, induces aversion in most people who invoke inbreeding depression problems or cultural considerations. Research has focused on the disgust felt when facing inbreeding intercourse between close kin but little is known about other responses. In this study, we considered the influence of fitness costs on aversive reactions by including disgust and emotional reaction as well as moral judgment and attitudes toward inbreeding: higher costs should induce a stronger aversive reaction. The fitness costs were manipulated by two factors: (i) the degree of the participants' involvement in the story (themselves, a sib or an unknown individual), and (ii) the degree of relatedness between the two inbreeding people (brother/sister, uncle-aunt/niece-nephew, cousin). To test this hypothesis, 140 women read and assessed different inbreeding stories varying in the fitness costs incurred. Findings showed that the higher the fitness costs were, the greater the aversive reaction was in an overall way. First, our results fitted with previous studies that tested the influence of fitness costs on disgust. Second, and more interestingly, findings went further by examining overall aversion, showing that fitness costs could influence emotions felt as well as attitudes and behaviors toward inbreeding people. The higher the fitness costs were, the less inbreeding people were perceived as moral and the more they were considered as a nuisance. However, results regarding avoidance were more nuanced.

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The Westermarck effect revisited: a psychophysiological study of sibling incest aversion in young female adults

Cited by 32 publications

References 26 publications

Hormonal correlates of pathogen disgust: testing the compensatory prophylaxis hypothesis

Hormonal correlates of pathogen disgust: testing the compensatory prophylaxis hypothesis

Hormonal correlates of pathogen disgust: Testing the Compensatory Prophylaxis Hypothesis

Fitness Costs Predict Emotional, Moral, and Attitudinal Inbreeding Aversion

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