The LGBT Health & Development Program

Tag: development

Research Blog – Use of Puberty Blocking Medications in the Treatment of Gender Dysphoria: A Clinical Research Review

18th December

How puberty blocking medication is being used to support the healthy development of transgender adolescents

Gender Nonconformity and LGBT-Affirmative Climates, Part 1

Posted by IMPACT in Research Blog, Youth Blog. No Comments

20th August

The problem is not “pink”, it’s prejudice.

Judy Shepard Chats with IMPACT

27th March

Judy Shepard of The Matthew Shepard Foundation shares her views on LGBT youth, parenting, and school bullying.

Internet use and sexual health of young men who have sex with men: A mixed-methods study

25th February

Young gay, bisexual, and other men who have sex with men (MSM) experience sexual health disparities due to a lack of support in settings that traditionally promote positive youth development. The Internet may help to fill this void, but little is known about how it is used for sexual health purposes among young MSM.

Genetic and environmental influences on pubertal development: Longitudinal data from Finnish twins at ages 11 and 14

3rd February

To study sources of individual differences in pubertal development, the authors fit a sex-limitation common factor model to data reported, at ages 11 and 14 years, by 1,891 twin pairs on items that comprise the Pubertal Development Scale (PDS; A. C. Petersen, L. Crockett, M. Richards, & A. Boxer, 1988). The model divides variation into a general pubertal factor and item-specific variation and, in addition, decomposes it into constituent sources. In both boys and girls, genetic influences made the largest contribution to variance common to PDS items. Genetic and nonshared environmental factors accounted for variation specific to PDS items in boys, whereas for girls, common environmental influences were added for growth spurt and menarcheal status. For both common and item-specific variation, genetic effects were partially sex specific. Subsidiary analyses found accelerated maturation in both boys and girls who … Read More »

Dermatoglyphics, handedness, sex, and sexual orientation

3rd February

Both handedness and dermatoglyphic asymmetry reflect early, prenatal influences and both have been reported to be associated with male sexual orientation; handedness has been related to female sexual orientation as well. Neurohormonal and developmental perturbation are two competing hypothesis that attempt to explain these connections. We attempted to replicate these associations and to extend dermatoglyphic asymmetry findings to women. Dermatoglyphic directional asymmetry and fluctuating asymmetry were unrelated to sexual orientation. Homosexual women, but not homosexual men, had highly significant increases in non-right-handedness compared with same-sex heterosexual controls. Although this pattern of results does not allow resolution of the two competing models, it does lend additional support to a biological basis of sexual orientation.

Mustanski, B., Newcomb, M., & Garofalo R. (2002). Dermatoglyphics, handedness, sex, and sexual orientation. Archives of Sexual Behavior, 31(1), 113-22.

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