Influence of Perceived Femininity, Masculinity, Race/Ethnicity, and Socioeconomic Status on Intimate Partner Violence Among Sexual-Minority Women.

Sexual-minority women (SMW) are believed to experience comparable or higher rates of intimate partner violence (IPV) than heterosexual women. In this study, we expand upon existing research by examining the intersectional relationships among self-perceptions of femininity and masculinity, race/ethnicity, socioeconomic status (SES), and IPV. Data are obtained from the most recent wave of the longitudinal Chicago Health and Life Experiences of Women study that included a diverse sample of SMW (N = 608). We use multivariate generalized linear models to investigate self-perceptions of femininity and masculinity, race/ethnicity, and SES differences in multiple types of IPV, including moderate IPV, severe IPV, and a sexual-minority-specific measure of IPV, threat of "outing" one's partner. Results suggest no differences across self-perceptions of femininity and masculinity in SMW's reporting of victimization but clear differences based on race/ethnicity and SES. Implications for providing support to SMW who experience IPV and suggestions for future research are discussed.

Gender, Race, and Minority Stress Among Sexual Minority Women: An Intersectional Approach.

Previous research examining the relationship between gender-role presentation and minority stress has largely focused on the negative effects of gender nonconformity. Some research suggests, however, that gender-role nonconformity may be protective against minority stress via participation in sexual minority in-group norms, which may include rejecting traditional gender-role norms and gender presentation. Historically, the meaning and value of masculinity and femininity within sexual minority communities has varied by race/ethnicity. As such, race/ethnicity may moderate the links between gender and minority stressors. This study used a diverse sample of sexual minority women (SMW) (N = 612) and separate indicators of masculinity and femininity to examine the effects of gender role on distal (victimization and discrimination) and proximal (internalized homophobia and stigma consciousness) measures of minority stress. We used multivariate generalized linear models to determine whether the effects of masculinity and femininity on the minority stress outcomes were moderated by race/ethnicity. We found that in many cases the relationships between masculinity and femininity and minority stress varied across racial/ethnic groups, and in fact, worked in opposite directions for White SMW compared to Black and Latina SMW. For example, our results showed that masculinity was associated with lower levels of victimization, discrimination, and stigma consciousness among Black and Latina SMW, but higher levels among White SMW. Results from this study suggest that these differences have important implications for exposure to minority stress.

Femininity, masculinity, and body image in a community-based sample of lesbian and bisexual women.

This study expands the literature on body image among lesbian and bisexual women by examining the relationship between self-perceived gendered personality traits and expressions (i.e., sense of self in relation to cultural constructions of femininity and masculinity) and body satisfaction, a key body image construct. We used data from Wave 3 (2010-2012) of the Chicago Health and Life Experiences of Women (CHLEW) study. The CHLEW includes a novel measure of gender expression, with masculinity and femininity as distinct but overlapping constructs. In the large analytic sample (N = 553), we found both similarities and differences in the association between femininity/masculinity and body image in lesbian and bisexual women. Bisexual women reported significantly lower body satisfaction than lesbian women. Higher masculinity was associated with greater body satisfaction in the full sample, but the association was stronger for bisexual than lesbian women. Femininity was positively associated with body satisfaction only for bisexual women. These findings suggest that masculinity and femininity play different roles in body satisfaction for lesbian and bisexual women and highlight the importance of disaggregating sexual identity in studies of sexual minority women's health. Clinicians should routinely ask about sexual identity and gender expression, especially when presenting concerns involve body image or disordered eating.

Predicting Ambivalence: When Same-Sex Sex is Only "Sometimes Wrong".

Despite Americans' growing acceptance of LGBTQ people and their sexual behaviors over the past 40 years, approximately 10% of the population consistently expresses conflicted feelings, reporting that same-sex sex is only sometimes wrong. This research employs a theory of socially structured ambivalence to examine how individuals with ambivalence toward the morality of same-sex sex differ from those with strong moral stances. Using multinomial regression analysis of General Social Survey data, we find that socio-structural conflicts-e.g. simultaneous membership in institutions with conflicting normative messages-are predictive of ambivalent attitudes, and the presence of these structured conflicts appears to have a cumulative effect. These findings provide evidence of the predictive power of socially structured conflicts in producing ambivalent attitudes and expand the existing literature on ambivalence and attitudes about same-sex relations. We propose that scholars conceptualize ambivalence as a distinctly socio-structural and relational construct that may help to signal fertile ground for social change.

Growth kinetics of extremely halophilic archaea (family halobacteriaceae) as revealed by arrhenius plots.

Members of the family Halobacteriaceae in the domain Archaea are obligate extreme halophiles. They occupy a variety of hypersaline environments, and their cellular biochemistry functions in a nearly saturated salty milieu. Despite extensive study, a detailed analysis of their growth kinetics is missing. To remedy this, Arrhenius plots for 14 type species of the family were generated. These organisms had maximum growth temperatures ranging from 49 to 58 degrees C. Nine of the organisms exhibited a single temperature optimum, while five grew optimally at more than one temperature. Generation times at these optimal temperatures ranged from 1.5 h (Haloterrigena turkmenica) to 3.0 h (Haloarcula vallismortis and Halorubrum saccharovorum). All shared an inflection point at 31 +/- 4 degrees C, and the temperature characteristics for 12 of the 14 type species were nearly parallel. The other two species (Natronomonas pharaonis and Natronorubrum bangense) had significantly different temperature characteristics, suggesting that the physiology of these strains is different. In addition, these data show that the type species for the family Halobacteriaceae share similar growth kinetics and are capable of much faster growth at higher temperatures than those previously reported.