The largest twin study and the search for the illusive ‘gay gene’

http://www.anglican-mainstream.net/index.php/2008/01/18/the-largest-twin-study-and-the-search-for-the-illusive-gay-gene/

[Anglican Mainstream] 19 Jan 2008--Twin studies are favorites of mine because of the potential light they throw on the origin of SSA. The latest one (Santtila et al., 2008) is three times larger than any previous one - in fact bigger than all the rest put together. Does it change anything? Quick answer: No. It confirms the best recent studies: genetic factors are minor; non-genetic factors are major. That is, critical idiosyncratic reactions predominate.