[elfman2]

No one knows the combination of factors creating homosexuality. All studies to date seem to suffer from sampling problems. I struggle even to follow the reasoning of the examinations of the data that exists.

I've gone through one analysis of studies from Colombia & Yale and another from Cambridge.

The former leans toward environment and says that the data is inconstant with a simple genetic influence model", that "there's substantial support for the role of social influences ", and that "its consistent with a general model that allows for genetic expression of same-sex attraction under specific, highly circumscribed, social conditions." "

The latter takes a step toward genetics and concludes that, "…it seems reasonable to conclude that male homosexuality, or, at least, some 'types' of male homosexuality, are under some degree of genetic control, although various problems with this data prevent more precise conclusions from being drawn.

I’ve seen papers and books that look at some of this data and lean much more one way or the other, but these two seem to be the most academic and without obvious bias.

[Paloma_55]

Good references.

I wonder if anyone has done similar studies on "theft".

You know, the desire to steal vs the actual lowering of the will to steal.

Seems that we humans have various levels of mental misbehavior, but only some of us will take that mental misbehavior and make a lifestyle out of it.

Have they done a twin study on it yet? If a twin is a pathological thief, is their twin more likely to be one?