Handedness and Birth Order Among Heterosexual Men, Gay Men, and Sao Praphet Song in Northern Thailand

© 2020, Springer Science+Business Media, LLC, part of Springer Nature. Previous research has examined handedness and birth order to inform sexual orientation and gender identity/role expression development; however, sexual orientation and gender identity/role expression have rarely been disentangled...

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Main Authors: Malvina N. Skorska, Lindsay A. Coome, Pongpun Saokhieo, Oranitcha Kaewthip, Suwat Chariyalertsak, Doug P. VanderLaan
Format: Journal
Published: 2020
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/70113
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-701132020-10-14T08:24:38Z Handedness and Birth Order Among Heterosexual Men, Gay Men, and Sao Praphet Song in Northern Thailand Malvina N. Skorska Lindsay A. Coome Pongpun Saokhieo Oranitcha Kaewthip Suwat Chariyalertsak Doug P. VanderLaan Arts and Humanities © 2020, Springer Science+Business Media, LLC, part of Springer Nature. Previous research has examined handedness and birth order to inform sexual orientation and gender identity/role expression development; however, sexual orientation and gender identity/role expression have rarely been disentangled to provide a more nuanced perspective. In Thailand, we investigated sexual orientation and gender identity simultaneously via comparison of 282 heterosexual men, 201 gay men, and 178 sao praphet song—i.e., androphilic, markedly feminine males recognized as a “third” gender. Handedness was examined as: extremely left-handed, moderately left-handed, ambidextrous, moderately right-handed, or extremely right-handed. Birth order was examined as numbers of older and younger brothers and sisters, by using Berglin’s, fraternal, and sororal indices, and by examining the older brother odds ratio and sibling sex ratio. Compared with heterosexual men, gay men and sao praphet song were more likely to be extremely right-handed. Sao praphet song were also more likely to be extremely left-handed than heterosexual and gay men. Heterosexual men and sao praphet song had later sororal birth order compared with the expected Thai population value, suggesting stopping rules influenced when probands’ mothers ceased having children. These findings provide new insights and replicate previous findings in a non-Western sample. Regarding handedness, in males, mechanisms related to extreme right-handedness likely influence the development of androphilia, whereas mechanisms related to both extreme right- and extreme left-handedness likely explain the combination of androphilia and feminine gender identity/role expression. Regarding birth order, similar to the conclusions of some prior research, stopping rules pose a challenge for testing the fraternal birth order effect. 2020-10-14T08:24:38Z 2020-10-14T08:24:38Z 2020-10-01 Journal 15732800 00040002 2-s2.0-85087569413 10.1007/s10508-020-01774-z https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85087569413&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/70113
institution Chiang Mai University
building Chiang Mai University Library
continent Asia
country Thailand
Thailand
content_provider Chiang Mai University Library
collection CMU Intellectual Repository
topic Arts and Humanities
spellingShingle Arts and Humanities
Malvina N. Skorska
Lindsay A. Coome
Pongpun Saokhieo
Oranitcha Kaewthip
Suwat Chariyalertsak
Doug P. VanderLaan
Handedness and Birth Order Among Heterosexual Men, Gay Men, and Sao Praphet Song in Northern Thailand
description © 2020, Springer Science+Business Media, LLC, part of Springer Nature. Previous research has examined handedness and birth order to inform sexual orientation and gender identity/role expression development; however, sexual orientation and gender identity/role expression have rarely been disentangled to provide a more nuanced perspective. In Thailand, we investigated sexual orientation and gender identity simultaneously via comparison of 282 heterosexual men, 201 gay men, and 178 sao praphet song—i.e., androphilic, markedly feminine males recognized as a “third” gender. Handedness was examined as: extremely left-handed, moderately left-handed, ambidextrous, moderately right-handed, or extremely right-handed. Birth order was examined as numbers of older and younger brothers and sisters, by using Berglin’s, fraternal, and sororal indices, and by examining the older brother odds ratio and sibling sex ratio. Compared with heterosexual men, gay men and sao praphet song were more likely to be extremely right-handed. Sao praphet song were also more likely to be extremely left-handed than heterosexual and gay men. Heterosexual men and sao praphet song had later sororal birth order compared with the expected Thai population value, suggesting stopping rules influenced when probands’ mothers ceased having children. These findings provide new insights and replicate previous findings in a non-Western sample. Regarding handedness, in males, mechanisms related to extreme right-handedness likely influence the development of androphilia, whereas mechanisms related to both extreme right- and extreme left-handedness likely explain the combination of androphilia and feminine gender identity/role expression. Regarding birth order, similar to the conclusions of some prior research, stopping rules pose a challenge for testing the fraternal birth order effect.
format Journal
author Malvina N. Skorska
Lindsay A. Coome
Pongpun Saokhieo
Oranitcha Kaewthip
Suwat Chariyalertsak
Doug P. VanderLaan
author_facet Malvina N. Skorska
Lindsay A. Coome
Pongpun Saokhieo
Oranitcha Kaewthip
Suwat Chariyalertsak
Doug P. VanderLaan
author_sort Malvina N. Skorska
title Handedness and Birth Order Among Heterosexual Men, Gay Men, and Sao Praphet Song in Northern Thailand
title_short Handedness and Birth Order Among Heterosexual Men, Gay Men, and Sao Praphet Song in Northern Thailand
title_full Handedness and Birth Order Among Heterosexual Men, Gay Men, and Sao Praphet Song in Northern Thailand
title_fullStr Handedness and Birth Order Among Heterosexual Men, Gay Men, and Sao Praphet Song in Northern Thailand
title_full_unstemmed Handedness and Birth Order Among Heterosexual Men, Gay Men, and Sao Praphet Song in Northern Thailand
title_sort handedness and birth order among heterosexual men, gay men, and sao praphet song in northern thailand
publishDate 2020
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85087569413&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/70113
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