J. Michael Bailey on twin research and sexual reorientation

Several new twin studies have been published over the past several months. A new one, just published on the Archives of Sexual Behavior website, deals with sexual orientation and neuroticism and psychoticism (more about that study in a future post). One of the co-authors of this new paper is J. Michael Bailey. Dr. Bailey is among the world's top sexuality researchers and author of numerous publications involving twins and sexual orientation. Here he comments on the limitations of twin studies … [Read more...]

Genetic effects of gender atypical behavior and sexual orientation: A study of Finnish twins

Due to time constraints, this post is less review than description of results. However, I wanted to post something on this study in advance of some commentary coming from Michael Bailey on the topic.Here is the reference and abstract:Abstract: The existence of genetic effects on gender atypical behavior in childhood and sexual orientation in adulthood and the overlap between these effects were studied in a population-based sample of 3,261 Finnish twins aged 33–43 years. The participants c … [Read more...]

Preview of coming attractions

Here is a preview of posts for the next couple of weeks.1. New research - Commenter Evan pointed out two new studies of interest, one a twin study and the other related to the the role of gender atypical behavior in adult mental distress. In additional to those two papers, there are two other studies on childhood gender nonconformity that I want to review as well.2. Q&A with Michael Bailey - Dr. Bailey will comment on the new Finnish twin study. He will also speak about the mistakes … [Read more...]

A conservative defense of sex research

During the Saddleback Civil Forum, if Rick Warren had asked the candidates about funding sex research, it might have gone like this.Warren: What is your position on researching sex?McCain: (with resolve and without hesitation) - Missionary!Obama - Uh, well, it depends on how you define "sex" and "research." Scientifically and politically, it is above my pay grade to determine what my position is in that arena.Pure fiction, of course. I doubt sex research will come up in this … [Read more...]

Multiple factors involved in sexual orientation, part 2

I posted 2 weeks ago about this twin study but it is now making the media.Here is the abstract of the article from Archives of Sexual Behavior:There is still uncertainty about the relative importance of genes and environments on human sexual orientation. One reason is that previous studies employed selfselected, opportunistic, or small population-based samples. We used data from a truly population-based 2005–2006 survey of all adult twins (20–47 years) in Sweden to conduct the largest twi … [Read more...]

Gender identity disorder research: Q & A with Kenneth Zucker

As a follow up to the recent broadcasts by NPR and several posts regarding gender identity, here is a Q & A involving J. Michael Bailey and Ken Zucker recently posted on the SEXNET email list. Dr. Zucker is the Head of the Gender Identity Service, Child, Youth, and Family Program and Psychologist-in-Chief at the Centre for Addiction and Mental Health in Toronto, Ontario, Canada. Dr. Zucker is the chair of the newly appointed Sexual and Gender Identity Disorders working group for the 5th … [Read more...]

60 Minutes Science of Sexual Orientation mother of twins, part 2

At last, I am posting some follow up comments made by Danielle, mother of the twin boys featured in the 60 Minutes segment, Science of Sexual Orientation. Part one is here and should be read first.Danielle said this in her initial email:I often wonder "if" I had told Adam that "yes" he could be a girl when he became old enough would he have stayed on that track of thought? However, at the urging of his therapist I told him I understood he was a girl yet he was really a boy and couldn't … [Read more...]

The Man Who Would Be Queen – Chapters 1 & 2

Several commenters have mentioned and quoted from Michael Bailey's book, The Man Who Would Be Queen.Click this link to read the first two chapters of the book.The Man Who Would Be Queen is published by Joseph Henry Press.PS - Much has gotten in the way of the second part of Danielle's remarks on gender identity issues, but they are coming soon... … [Read more...]