Research confirms men with older brothers are more likely to be gay, suggesting same-sex attraction has a biological basis
- Written by: Francisco Perales, Associate Professor, School of Social Science, The University of Queensland
ShutterstockNew research shows having a greater number of older brothers increases the probability of a person entering a same-sex union at some point in their lives.
This finding, detailed in our paper published today in the Journal of Sex Research, offers a rare insight into the origins of sexual orientation.
The origins of sexual orientation
In...