Toxic masculinity, literally
Prenatal testosterone linked to long-term effects in females with male twin
11–20 of 57 posts
Re: Prenatal testosterone linked to long-term effects in females with male twin
#12So if prenatal testosterone has such a deleterious effect on females, what effect does it have on males? How do all those metrics they measured for the girl half of the twin pairs compare to their sibling?
"Unlike the females, the researchers found that male twins do not experience long-term consequences of being exposed to a female twin in utero."
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Re: Prenatal testosterone linked to long-term effects in females with male twin
#13Notably, they didn't control for social effects by looking at female and male sibling pairs with an age difference of 10-18 months. How much of this is parents favoring the male sibling?
"To separate the effects of fetal testosterone from postnatal socialization, the research team repeated their analyses focusing only on female twins whose twin sibling—either twin sister or twin brother—died shortly after birth, and thus they were raised as singletons."
Shouldn't they have monitored both groups, using twins raised together as the control group?
Re: Prenatal testosterone linked to long-term effects in females with male twin
#14Toxic masculinity, literally
Technically a somewhat clever pun, but currently that’s such an emotionally charged issue that no one wants it brought up unless it’s relevant.
Either that or it may sound like you’re insulting all males.
Re: Prenatal testosterone linked to long-term effects in females with male twin
#15Earlier quoted context omitted.
"To separate the effects of fetal testosterone from postnatal socialization, the research team repeated their analyses focusing only on female twins whose twin sibling—either twin sister or twin brother—died shortly after birth, and thus they were raised as singletons."
Shouldn't they have monitored both groups, using twins raised together as the control group?
"repeated their analysis"
This effect exists in twins raised as singletons and twins raised with their brother.
Re: Prenatal testosterone linked to long-term effects in females with male twin
#16Similar for cows. https://en.wikipedia.org/wiki/Freemartin
Wow, from the article:
> In rural areas folklore often claimed this condition was not just peculiar to cattle, but extended also to human twins; this belief perpetuated for generations, as was mentioned in the writings of Bede. (de Albuquerque, Martim Notes and Queries Volume 2. 1857 by Oxford University Press, p. 149)
Actual observed effect that has now been confirmed by science? Or, a superstition that got lucky?
Re: Prenatal testosterone linked to long-term effects in females with male twin
#17So if prenatal testosterone has such a deleterious effect on females, what effect does it have on males? How do all those metrics they measured for the girl half of the twin pairs compare to their sibling?
"Unlike the females, the researchers found that male twins do not experience long-term consequences of being exposed to a female twin in utero."
[deleted]
Re: Prenatal testosterone linked to long-term effects in females with male twin
#18So if prenatal testosterone has such a deleterious effect on females, what effect does it have on males? How do all those metrics they measured for the girl half of the twin pairs compare to their sibling?
> 'such a deleterious effect'
This phrasing is really not accurate. It's a small difference, trivial, dwarfed by things like socioeconomic status, educational opportunities, rearing environment quality, presence of an alcoholic parent, nationality etc.
Re: Prenatal testosterone linked to long-term effects in females with male twin
#19So if prenatal testosterone has such a deleterious effect on females, what effect does it have on males? How do all those metrics they measured for the girl half of the twin pairs compare to their sibling?
"Unlike the females, the researchers found that male twins do not experience long-term consequences of being exposed to a female twin in utero."
That's not what I asked. I asked what effect in utero testosterone had on boys. Did they have lower metrics than their sisters? Did boys with higher levels of in utero testosterone have lower metrics than boys with lower levels of in utero testosterone?
Re: Prenatal testosterone linked to long-term effects in females with male twin
#20Given that women with lower digit ratios[1] aren't socialized any differently than women with higher digit ratios I'm very unsurprised at this result.