Years ago I read Born Together-Reared Apart, a book by Nancy Segal about the MISTRA study. I skimmed a lot because I found the book to be poorly written. I wasn’t convinced the study’s methodology was adequately vigorous. The study came up with all sorts of amazing similarities in the lives of the twins, but Segal dismissed critics who assumed the twins exchanged information. No way, said the author, because the twins understood the importance of not doing so and fully complied. She presented no proof of this assertion Also, the study compared dozens of the twins’ traits. When that many comparisons are made at least some of the positive heritability correlations are going to be due to chance. How was this problem handled? As far as I could tell it wasn’t. It also annoyed me that at one point homosexuality was discussed under the heading of psychopathology. Incredible. The fact that the researchers won’t allow the raw data to be examined is very suspicious. Based on my own criticisms and what you and others have said, I’m convinced this study is worthless.