Fitness costs predict emotional, moral and attitudinal inbreeding aversion
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 fel...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2016-11-01
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| Series: | Frontiers in Psychology |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fpsyg.2016.01860/full |
| _version_ | 1819093051691237376 |
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| author | Florence Lespiau Gwenael Kaminski |
| author_facet | Florence Lespiau Gwenael Kaminski |
| author_sort | Florence Lespiau |
| collection | DOAJ |
| description | 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 towards 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 towards 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. |
| first_indexed | 2024-12-21T23:05:22Z |
| format | Article |
| id | doaj.art-d46c4572b6b74694aa3b90cae2e6e509 |
| institution | Directory Open Access Journal |
| issn | 1664-1078 |
| language | English |
| last_indexed | 2024-12-21T23:05:22Z |
| publishDate | 2016-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Psychology |
| spelling | doaj.art-d46c4572b6b74694aa3b90cae2e6e5092022-12-21T18:47:11ZengFrontiers Media S.A.Frontiers in Psychology1664-10782016-11-01710.3389/fpsyg.2016.01860217144Fitness costs predict emotional, moral and attitudinal inbreeding aversionFlorence Lespiau0Gwenael Kaminski1CLLE-LTCCLLE-LTCIn 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 towards 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 towards 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.http://journal.frontiersin.org/Journal/10.3389/fpsyg.2016.01860/fullInbreedingkinshipCoresidenceDegree of relatednessdegree of involvement |
| spellingShingle | Florence Lespiau Gwenael Kaminski Fitness costs predict emotional, moral and attitudinal inbreeding aversion Frontiers in Psychology Inbreeding kinship Coresidence Degree of relatedness degree of involvement |
| title | Fitness costs predict emotional, moral and attitudinal inbreeding aversion |
| title_full | Fitness costs predict emotional, moral and attitudinal inbreeding aversion |
| title_fullStr | Fitness costs predict emotional, moral and attitudinal inbreeding aversion |
| title_full_unstemmed | Fitness costs predict emotional, moral and attitudinal inbreeding aversion |
| title_short | Fitness costs predict emotional, moral and attitudinal inbreeding aversion |
| title_sort | fitness costs predict emotional moral and attitudinal inbreeding aversion |
| topic | Inbreeding kinship Coresidence Degree of relatedness degree of involvement |
| url | http://journal.frontiersin.org/Journal/10.3389/fpsyg.2016.01860/full |
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