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TCO
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Richmond, VA
Jan 1970 time: 00:19
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quote: Originally posted by MrFun
When I used to have a stronger belief in the genetic theory, I did my own research report on sexual orientation development.
Here is part of my report on twin studies:
"Another different theory developed in the 1980s was formulated by Richard Pillard and James Weinrich. They wanted to determine if homosexuality clustered in families (LeVay, 174-177). Are siblings of gays or lesbians more likely themselves to be gay or lesbian than siblings of heterosexuals? From one study, it was found that among brothers of heterosexual men, about 4% were homosexuals or bisexual. Among brothers of gay men, about 22% were homosexual or bisexual. From four separate studies, it was found that among the sisters of heterosexual women, 0% to 11% were lesbian or bisexual. With sisters of lesbians, 5% to 25% were lesbian or bisexual.
However, the observation that homosexuality is familial is not in itself proof of genetic influence on sexual orientation since there could be many environmental mechanics involved. Pillard and others performed studies on twins. These studies came up with concordance rates for homosexuality in monozygotic2 twins that are much higher than in dizygotic3 twins. In one study, 52% of monozygotic co-twins of gay men were themselves gay, while only 22% of dizygotic twins were gay. For lesbians about 48% for monozygotic siblings and only 16% for dizygotic siblings. To account for the possibility of gay or lesbian co-twins who would readily participate in these studies, Michael Bailey and his colleagues set a broad range between 30% and 75% for both men and women who would be gay or lesbian. Another weakness with these studies is that one has to consider non-genetic factors influencing sexual orientation. However, these studies offer substantial evidence that there is genetic influence."
END OF MRFUN'S REPORT
This is only a brief touch on this -- whole books have been written on this one particular theory, of course.
But now, I no longer have as strong a belief in the genetic theory anymore. |
This seems to be pretty good evidence of a genetic cause. )at least for some people) Would need to look at the numbers and the primary sources more...but at least based on your report, it looks genetic. (Oh...and I guess there was a caveat about self-selection. Would be interesting to look at that and see if it can be factored out.)
What made your beleif in genetic causation weaken?
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MrFun
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of Iowa
Nov 2000 time: 23:19
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Mine was a basic, overview research paper on several different topics, so I did not go really in-depth with any one issue.
But here is my bibliography for my report:
Works Cited
LeVay, Simon. Queer Science. The MIT Press, 1996.
MacHover, June, Ph.D., McWhirter, P. David, M.D., Sanders, A. Stephanie, Ph.D.
Homosexuality/Heterosexuality – Concepts of Sexual Orientation. Vol. 2. Oxford University Press, 1990.
Strickland, Bonnie. “Research on Sexual Orientation and Human Development: A
Commentary.” Developmental Psychology. Vol. 31, no. 1. January, 1995. Pages 137-140.
Encyclopedia of Adult Development. Oryx Press, 1993. Pages 208-214.
Encyclopedia of Marriage and Family. Vol. 2. Simon & Schuster Macmillan, 1995.
Page 642.
Encyclopedia of Psychology. Vol. 7. Oxford University Press, 2000. Pages 260-262.
“Shades of Gay.” Newsweek 20 March 2000.
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Asher
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Calgary, Alberta
Nov 1999 time: 22:19
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quote: Originally posted by MrFun
You know that saying -- "ignorance is bliss."
If heterosexuals can gain the knowledge of how they become straight, I think that leads us to more enligthenment -- for the first time, we would finally know for certain how sexual orientation develops.
This research will benefit heterosexuals, homosexuals, and bisexuals.
Think of the advance we will make in sex education courses, once we know how a person's sexual orientation develops. |
I'm sorry, MrFun, but do you honestly think what studies say is going to change everyone's mind in society about homosexuality?
A more likely scenerio is we'll find a gene that causes or allows for homosexuality, and then in designer babies we'll isolate that gene so it's not possible so we can all have perfect heterosexual blond hair, blue eyed babies.
And then there's even the possibility of CURING homosexuality now that we know how it's caused. Isn't that an exciting possibility?
And you honestly think that this research will benefit people as a whole? 
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MrFun
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of Iowa
Nov 2000 time: 23:19
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quote: Originally posted by Asher
I'm sorry, MrFun, but do you honestly think what studies say is going to change everyone's mind in society about homosexuality?
A more likely scenerio is we'll find a gene that causes or allows for homosexuality, and then in designer babies we'll isolate that gene so it's not possible so we can all have perfect heterosexual blond hair, blue eyed babies.
And then there's even the possibility of CURING homosexuality now that we know how it's caused. Isn't that an exciting possibility?
And you honestly think that this research will benefit people as a whole? |
That ignorance phrase I used was not targeted towards you -- it was to explain why most heterosexuals have not even considered how they became straight. Being straight is the norm, so they feel no need to research sexual orientation.
But in the science fields, that has changed.
And I'm hoping now, that there is no genetic cause for sexual orientation development.
I need to do more, expanded reading on other theories before I can re-decide what is a stronger theory.
If there does turn out to be some gene, however, I am hoping that ethical standards will prevent widespread abuse and misuse of this genetic knowledge.
And of course, new laws would be enacted and enforced.
The society is slowly moving towards more acceptance towards gays and bisexuals.
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