Research Request: Are You A Twin? Are You Transsexual?

October 20, 2009

Via the Pacific Center for Sex and Society, University of Hawaii, HI, USA:


Please help if you can!

It is now understood that among twins, there are sets in which both have transitioned gender and other sets in which only one has switched. Will you please help us try and find out why the differences? Your participation will augment the contributions currently on hand. This research was started some years ago but completion had to unfortunately be postponed. It is now being revived. Please help if you can.

We are looking for twin sets, male or female, identical or fraternal, where one or both have transitioned F2M or M2F. You are needed for a research project to answer a set of questions about your background and your twin’s condition and transition. The questionnaire will ask about your development and the circumstances surrounding your and your twin’s switch. Some of the questions will be personal but most are neutral. Even if you are the twin that didn’t change and your twin the one who did, your answers would be of value. We are trying to find out those features among twins that have or have not led to gender change.

The survey will consist of a set of questions we will mail to you and your twin with a return postage paid envelope. Answering the questions will take about one to two hours of time. Twins are welcome from outside the USA as well as within. Everything will be confidential and nothing will be identified with any particular person.

When the survey is completed the information gathered will be compiled, analyzed, and distributed to those in transsexual self-help groups and via professional publications, to those in the helping professions. We desire to improve the lives of persons touched by the condition.

If you are willing to help, please get in touch with Dr. Milton Diamond of the University of Hawaii, School of Medicine.

By mail: 1960 East-West Road, Honolulu, Hawai‘i 96822, USA
By email:

In the contact please let us know if you are male or female at birth, and if identical or fraternal. We will need the snail mail addresses and cooperation of both you and your twin.

If you have already contributed in the past, many thanks for that – and rest assured those data will be part of the final publication.

Many, many thanks!


Curtsey to TransNewsGirl for the heads-up

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