In a smaller country like Denmark, it seems that gay people in the rural areas might just move to the city where attitudes are more accepting.

This is also fact in big countries like USA. Here a survivey whith praevalence and factor residence place: Stuart Michaels 1996 Table “Wohnort” = “place of residence”, “Vorort” = “suburb”, CC = Central Cities, biggest metropolitan areas, “Nächste 88 CC” = “next 88 CC”

There is also a little study from a country youth organisation around Berlin. And a residence study in Vienna (wich place in the city, gay neighborhood) where overproportional people are born in rural areas.

The Causes are different. Some move to a big city before coming out, because they feeling not right in the social tightness of a small town. But it is only one factor to move. It makes it more likely to move. The primary causes are mostly better worklplace, etc.

And same sex partnership is not prevalence of homosexuality. I think you will find also more homosexuals in traditional marriages in urban areas.

For Trayce Hansen from NARTH this study is an evidence that Legalizing Same-Sex Marriage Will Increase Prevalence of Homosexuality.

There is a slight increase in odds of homosexual marriage for men if one’s mother was over 35 at birth.

I bet if I googled for even 5 minutes I’d find that 100 different health problems go up for children of older moms.
—
One of the first developmental markers scientists check for is handedness. Do older moms have more left handed children?
Lefties more likely from older moms, study says
Check! For those who don’t know an increase in left handedness is a sign of misdevelopment. For example half of all premature babies are lefties.

I find myself in the unusual position of qualifying Morten’s conclusions. I think there is a need to qualify the factors by the non-significant results found. For instance, Morten lists father absence as a factor related to gay marriage. However, I would note that paternal absence via death was unrelated to outcome as was lack of knowledge of father’s identity.

When the father relationship plays into the picture, I don’t think it’s absence as in death, divorce, military service, etc. I think it’s more of a message that a child perceives from a father who is present.

I mean the age of the mother when she gave birth to the boy.

There is a slight increase in odds of homosexual marriage for men if one’s mother was over 35 at birth.

Evan,

Do you mean a mother that is older when given birth?

If I remember well, the authors concluded that these factors favour same-sex partnership (SSP):

- for men: father absence, older sisters, high maternal age at the time of birth, urban place of birth, youngest child, only child;

- for women: maternal death during puberty, older brothers, urban place birth, youngest child, only child, single girl among sibship.

Among the factors disfavouring SSP were:

-for men: younger sisters (!), marriage stability;

- for women: younger sisters (again), younger brothers, marriage stability.

Warren devoted this post to comparing the data against reparative theory claims. I have to admit I haven’t read their books, but I have an outline of their theory from their website. I don’t remember reading anything about younger sisters having a particular impact on both men and women’s development, that would influence their future choice of partners. What comes to my mind right now is rather the imprinting theory, that I think could have a way of working with age differences between siblings (I know it’s considered to play a role relative to parents, but I think it’s not limited to them). Another added possibility would be that boys’ and girls’ brain parts responsible with their adult sexual orientation are exercised differently in different family constellations which include these factors. That would happen on top of and relative to their situation in the gender segregated world of childhood play and puberty strife.

One might suppose that attitudes toward same-sex marriage are more liberal in the urban area if one assumes people are married where they are born. In a smaller country like Denmark, it seems that gay people in the rural areas might just move to the city where attitudes are more accepting. Perhaps, the social attitudes in the area where one grows up plays a role as well.

I just checked and the island that Copenhagen is on is a little over 50 miles wide at the widest point. The mainland is a little over 100 miles wide at the widest point. If somebody can afford to rent a car and purchase 5 gallons of gas they can move anywhere in the country in 3 hours or less. It’s hard for me to believe that place of birth would have any impact on marriage in a wealthy country the size of a US city.
—
I should note that Schizophrenia which is triggered by flu virus (and a few other bugs) shoots way up in big cities.
Country and Rural life (vs. city living) before age 15 is associated with lower rates of schizophrenia