Function and Phylogeny

Abstract

Evolutionary explanations come in two basic forms. Functional explanations focus on elucidating the adaptive (i.e., reproductive) value of a particular behavior. Phylogenetic explanations focus on understanding the evolutionary history of a behavior: that is, how it originated and changed in a step-by-step manner over time. Cross-species comparisons indicate that same-sex sexuality is not an evolutionarily uniform phenomenon. Multiple analogous forms of homosexual behavior have evolved. I argue that our understanding of why same-sex sexualities evolved is contingent on the implementation of both types of evolutionary analysis. I describe research on female bonobos (Pan paniscus) to illustrate how functional investigations can help explain why some forms of primate homosexual behavior evolved, such as those that are sociosexual in nature. I then describe my research on female Japanese macaques (Macaca fuscata) to illustrate how phylogenetic investigations can help account for how other forms of homosexual behavior evolved, such as those that are strictly sexual in nature. I conclude by discussing how both functional and phylogenetic perspectives need to be fully integrated to account for these data and, by extension, the evolution of male homosexuality in humans.     

Offending Gender Being and Wanting in Male Same-Sex Desire

The hegemony of gender in theorizing sexuality has made sexual orientation the principal organizer of erotic experience. This has resulted in a heterosexual-homosexual binary in which male hetero-sexuality is presumed to hinge on the eroticization of difference while male homosexuality has been Understood as a desire for likeness. In this essay, I argue that this view of male same-sex desire is forced by the dominant heterosexist discourse that splits being and wanting into mutually exclusive categories for its understanding of normative heterosexual desire. Examining the psychic consequences of this forced splitting in both straight and gay men, I argue that subjective experiences of difference are no less central to same-sex desire and that, in gay and straight contexts alike, defensive forms of complementarity often wreak havoc with the capacity to love.     

The Evolution of Sexual Pleasure

Abstract

Sexual pleasure is an innate component of human sexuality. Although disdained throughout history by religious groups and variably explained by theories, philosophers, and societies, sexual pleasure permeates human experience. Traditional evolutionists explain this preoccupation via the development of sexual mating strategies and the human desire to propagate one's genes; however, here I will argue that the saturation of sexual pleasure suggests that sexual activity is no longer pursued solely to ensure reproductive success. Rather, humans engage in sexual behavior to achieve sexual pleasure—a proposition supported by widespread non-procreative sex in mammals, divergent cultural norms, and humans' evolved capacity to experience heightened sexual pleasure. I will address the nature and evolution of sexual pleasure with a cross-cultural findings culled from ethology, anthropology, primatology, and evolutionary theories.     

The Evolution of Plasticity in Female-Female Desire

Abstract

Previous psychological and anthropological research suggests that female-female desires show greater variability and plasticity than do male-male desires. I argue that plasticity in female-female desire has its origins in the evolved independence between female proceptivity (i.e., motivation to initiate sexual activity) and female arousability (i.e., capacity to become aroused to sexual stimuli), which evolved in concert with the loss of a circumscribed and observable period of estrus in higher primates. Proceptivity is an intrinsically cyclical system, peaking during ovulationwhen estrogen levels are highest, whereas arousability is continuous and hormone-independent. Because female proceptivity peaks only a few days per month, a relatively greater proportion of women's day-to-day desires is governed by arousability. The opposite is true for males, who experience continuously high proceptivity mediated by their continuously high androgen levels. Moreover, because arousability is a responsive rather than an initiatory system, there would have been little evolutionary benefit to “orienting” this system exclusively toward other-sex partners. Therefore, arousability likely permits sexual desires for both sexes. Women will consequently have more opportunities than men to experience situationally-triggered same-sex desires, regardless of their underlying sexual orientation. The implications of this perspective for understanding different manifestations of same-sex sexuality are discussed. doi:10.1300/J056v18n04_01     

Same-Sex Sexual Experience in Thailand

Abstract

In this paper I consider a number of studies of rates of same-sex sexual experience among young men and women in Thailand which have been conducted since the late 1980s. Interest in conducting these quantitative studies was prompted, first, by concerns among Thai educators and social commentators about a perceived increase in homosexual behavior among both male and female adolescents and, second, by the need to determine the prevalence of different sexual behaviors considered to be associated with the risk of transmitting the human immunodeficiency virus (HIV). Studies of rates of same-sex experience have a more recent history in Thailand than in the United States or other western countries, beginning in the second half of the 1980s. The first studies were undertaken by researchers working within a psychological framework which problematized homosexuality and which was motivated by a concern to reduce the incidence of homosexuality. This anti-homosexual research program is detailed in Jackson and Sullivan's introductory essay in this volume. The second, HIV/AIDS-influenced set of studies, have been undertaken by epidemiologists and demographers operating within a framework that has not problematized homoer-oticism. In reviewing the Thai research, I critically assess the methodologies of the various studies and point to possible biasing factors in data gathering techniques. I conclude by considering the implications of these studies for the provision of social services to homosexually active men and women in Thailand.     

Psychiatric Symptoms and Same-Sex Sexual Attraction and Behavior in Light of Childhood Gender Atypical Behavior and Parental Relationships

This study explores the relation between the level of current symptoms of depression and anxiety and recalled childhood gender atypical behavior (GAB), and quality of relationships with parents among men and women who reported same-sex sexual attraction or engaged in same-sex sexual behavior and men and women who did not. Matched pairs, 79 men (n = 158) and 148 women (n = 296), with equal levels of GAB were created of Finnish participants with either same-sex sexual attraction or behavior and participants without. The measures used were retrospective questionnaires. Ratings of maternal and paternal over-control and coldness differed as a function of same-sex sexual attraction or behavior. Childhood GAB was correlated with negative ratings of parental relationships. Both same-sex sexual attraction or behavior and a history of childhood GAB affected the reported levels of current depression and anxiety. Only gender typical participants with no same-sex sexual attraction or behavior reported significantly lower levels of symptoms. The findings suggest that childhood GAB is related to later distress both among hetero- and homosexual individuals. The elevated level of psychological distress among homosexual individuals, reported in several studies, might—to some extent—be caused by their generally higher levels of childhood GAB as opposed to a homosexual orientation per se.     

Is Homophobia Associated with an Implicit Same-Sex Attraction?

Some theorists propose that homophobia stems from underlying same-sex attraction. A few studies have tested this hypothesis, yet without a clear measure of implicit sexual attraction, producing mixed results. For the first time, we test this attraction-based account of homophobia among both men and women using an implicit measure of sexual attraction. No evidence of an attraction-based account of homophobia emerged. Instead, implicit same-sex attraction was related to positive evaluations of gay men and lesbians among female participants. Even in targeted analyses examining the relation between implicit same-sex attraction and homosexual evaluations among only those theoretically most likely to demonstrate an attraction-based homophobic effect, implicit same-sex attraction was not associated with evaluations of homosexuals or was associated with more positive evaluations of homosexuals. In addition, explicit same-sex attraction was related to positive evaluations of gay men and lesbians for male participants. These results are more in keeping with the attitude-similarity effect (i.e., people like, rather than dislike, similar others).     

Sexual identity development among gay, lesbian, and bisexual youths: consistency and change over time

A longitudinal report of 156 gay, lesbian, and bisexual youths examined changes in sexual identity over time. Fifty-seven percent of the youths remained consistently self-identified as gay/lesbian, 18% transited from bisexual to gay/lesbian, and 15% consistently identified as bisexual over time. Although youths who consistently identified as gay/lesbian did not differ from other youths on time since experiencing sexual developmental milestones, they reported current sexual orientation and sexual behaviors that were more same-sex centered and they scored higher on aspects of the identity integration process (e.g., more certain, comfortable, and accepting of their same-sex sexuality, more involved in gay-related social activities, more possessing of positive attitudes toward homosexuality, and more comfortable with others knowing about their sexuality) than youths who transited to a gay/lesbian identity and youths who consistently identified as bisexual. Contrary to the hypothesis that females are more sexually fluid than males, female youths were less likely to change identities than male youths. The finding that youths who transited to a gay/lesbian identity differed from consistently gay/lesbian youths suggests that identity integration continues after the adoption of a gay/lesbian sexual identity.     

Attitudes toward lesbians, gay men, bisexual women, and bisexual men in Germany

Attitudes toward lesbians, gay men, bisexual women, and bisexual men were assessed in a national representative sample of 2,006 self-identified heterosexual women and men living in Germany. Replicating previous findings, younger people held more favorable attitudes than older people; women held more favorable attitudes than men; and men held more favorable attitudes toward female than male homosexuality, whereas women did not differentiate. However, women held more favorable attitudes toward homosexuals than toward bisexuals, whereas men did not differentiate. Knowing a homosexual person was an important predictor of attitudes, as was political party preference. Both same-sex and opposite-sex sexual attraction were substantially related with attitudes. Our findings support the notion that attitudes toward lesbians, gay men, bisexual women, and bisexual men are related but distinct constructs.     

A Comparison of Survey Techniques on Sensitive Sexual Behavior in Italy

This article compares two national surveys carried out through the most commonly used procedures in Italy: CATI (computer-assisted telephone interviews) and SAQ-FI (self-answered questionnaires following interviews). Both surveys ask two identical questions concerning sensitive sexual behavior: early age at first intercourse and same-sex attraction. The SAQ-FI survey had both unit non-response and item non-response rates much lower than the CATI survey. Moreover, in the CATI survey, the groups with highest item non-response rates were also the groups with the lowest proportions of early intercourse and homosexual attraction. In addition, a differential analysis of the respondents produced diverse results for the two surveys. This is especially true of results by gender for same-sex attraction: Such behavior is more common among men (3.1%) than women (2.9%), according to the CATI survey, whereas the opposite is true of the SAQ-FI survey (6.1% of men vs. 7.7% women). In Italy at the beginning of the 21st century, CATI surveys reveal a lower level of early intercourse and same-sex attraction than SAQ-FI surveys. This article argues that the CATI survey underestimates the true level of these sensitive sexual behaviors in the Italian population.     

Family and sexual orientation: the family-demographic correlates of homosexuality in men and women

Using a nationally representative sample of young adults, I identify the family-demographic correlates of sexual orientation in men and women. Hence, I test the maternal immune hypothesis, which posits that the only biodemographic correlate of male homosexuality is the number of older brothers, and there are no biodemographic correlates of female homosexuality. For men, I find that having one older brother does not raise the likelihood of homosexuality. Although having multiple older brothers has a positive coefficient, it is not significant. Moreover, having any older sisters lowers the likelihood of homosexual or bisexual identity. For women, I find that having an older brother or having any sisters decreases the likelihood of homosexuality. Family structure, ethnicity, and education are also significantly correlated with male and female sexual orientation. Therefore, the maternal immune hypothesis cannot explain the entire pattern of family-demographic correlates. The findings are consistent with either biological or social theories of sexual orientation.     

Turn it off! the effects of exposure to male-male erotic imagery on heterosexuals' attitudes toward gay men

Despite the recent proliferation of lesbian, gay, and bisexual (LGB) thematic content in U.S. media, there have been relatively few empirical investigations examining its impact on heterosexuals' attitudes toward LGB individuals. This study examined the effect of one type of content, male-male homoerotic imagery, on male and female heterosexuals' attitudes toward, stereotypes about, and affective reactions to gay men. One hundred ninety-eight undergraduate students were assigned to either a male-male or male-female erotica condition, and their corresponding attitudes toward gay men were assessed. Results revealed that the effect of erotic imagery (male-male vs. male-female) on participants' stereotype and affect scores differed for men and women at varying levels of sexual anxiety. The implications of these findings are discussed in light of the literature on exposure to erotic imagery and attitudes toward gay men. In particular, the study highlights the need for additional research that acknowledges within-gender heterogeneity with respect to antigay attitude valence, extremity, and function.     

Increasingly Gay Self-Representations of Male-Male Sexual Experiences in Thailand

Abstract

With Thailand's economic development, urbanization (especially the rapid growth of Bangkok), growing contact between Thais and non-Thais, an increased availability of representations of ho-mogender homosexuality (i.e., masculine men being sexually penetrated), and international AIDS discourse, male homosexuality not structured by differences in age, gender or class has become more apparent. Three sets of stories and letters sent by Thai men to Thai gay magazines show a decline in a gender-stratified conception and enactment of homosexuality in Thailand, paralleling the heterogender-to-gay transformation of homosexuality elsewhere in the world. The highly developed commercial venues for males who have sex with males in Bangkok are little mentioned in these texts and suggest the need for the development of other kinds of community infrastructure such as telephone advice lines (providing information about the basic mechanics of safe sex and other aspects of male-male relationships). Males who have sex with males in Bangkok, in particular, need a community center in which to discuss issues of power, gender, and sexuality.     

Family and Sexual Orientation: The Family-Demographic Correlates of Homosexuality in Men and Women

Using a nationally representative sample of young adults, I identify the family-demographic correlates of sexual orientation in men and women. Hence, I test the maternal immune hypothesis, which posits that the only biodemographic correlate of male homosexuality is the number of older brothers, and there are no biodemographic correlates of female homosexuality. For men, I find that having one older brother does not raise the likelihood of homosexuality. Although having multiple older brothers has a positive coefficient, it is not significant. Moreover, having any older sisters lowers the likelihood of homosexual or bisexual identity. For women, I find that having an older brother or having any sisters decreases the likelihood of homosexuality. Family structure, ethnicity, and education are also significantly correlated with male and female sexual orientation. Therefore, the maternal immune hypothesis cannot explain the entire pattern of family-demographic correlates. The findings are consistent with either biological or social theories of sexual orientation.     

Birth Cohort Differences in Sexual Identity Development Milestones Among HIV-Negative Gay and Bisexual Men in the United States

The coming-out process for gay and bisexual men (GBM) involves crossing sexual identity development (SID) milestones: (1) self-awareness of sexual attraction to the same sex, (2) self-acceptance of an identity as gay or bisexual, (3) disclosure of this sexual identity to others, and (4) having sex with someone of the same sex. We examined trends in SID milestones by birth cohort in a 2015 U.S. national sample of GBM (n = 1,023). Birth cohort was independent of when men first felt sexually attracted to someone of the same sex (median age 11 to 12). However, with the exception of age of first same-sex attraction, older cohorts tended to pass other milestones at later ages than younger cohorts. Latent class analysis (LCA) of SID milestone patterns identified three subgroups. The majority (84%) began sexual identity development with same-sex attraction around the onset of puberty (i.e., around age 10) and progressed to self-identification, same-sex sexual activity, and coming out—in that order. The other two classes felt same-sex attraction during teen years (ages 12.5 to 18.0) but achieved the remaining SID milestones later in life. For 13% of men, this was during early adulthood; for 3% of men, this was in middle adulthood. Findings highlight the need to monitor ongoing generational differences in passing SID milestones.     

The Prison Lesbian Revisited

Abstract

One aspect of women's imprisonment that has received consistent scholarly and public interest is homosexuality. These experiences are generally seen as a subcultural adaptation to the stresses and deprivations of the environment, that is, as situational, and little attention has been given to the implications they might have for the sexual identity of the women involved or to the possibility that some women may continue involvement in same-sex relationships after prison. In-depth interviews with 40 incarcerated women were conducted to explore their experiences with same-sex relationships in prison. Some condemned same-sex relationships but others became involved in them for companionship and other reasons. While some women saw their involvements as limited to prison, others were questioning their sexual identity and thought they might continue the same or other same-sex relationships on the outside.     

“Be Ye Transformed”: The Sexual Storytelling of Ex-gay Participants

The ex-gay movement in the United States has, for the last three decades, argued that there can be “freedom from homosexuality.” We draw from eighteen in-depth, semi-structured interviews with individuals seeking help from an ex-gay ministry for same-sex attractions. We argue that the testimonies that “ex-gays” or “strugglers” we spoke with represent a distinct genre of story, what Kenneth Plummer would call a “sexual story,” such as, for example, lesbian and gay coming out narratives. We find that elements of each type of narrative are flexible and culturally resonant across subcultures, demonstrating the creativity with which social movements and individuals construct and reconstruct themselves.     

Asexuality: A Multidimensional Approach

While lack of sexual attraction, lack of sexual behavior, and self-identification as asexual have been used as criteria to define asexuality, it is not known how much they overlap in describing the same group of people. This study aimed to assess how many individuals could be identified as asexual based on each of these criteria and on combinations of these criteria. Participants were recruited through the Asexuality Visibility and Education Network, social media, and posts on several health- and lifestyle-related websites. In total, 566 participants between 18 and 72 years old (M = 27.86, SD = 10.53) completed an online survey (24% male, 68.9% female, 7.1% “other”). Based on self-identification or lack of sexual attraction, 71.3% and 69.2%, respectively, of participants were categorized as asexual, while based on lack of sexual behavior only 48.5% were categorized as asexual. Gender differences were found only for those participants who indicated that they did not experience sexual attraction, with more women (72.8%) than men (58.8%) indicating a lack of sexual attraction. Given that self-identification as asexual implies familiarity with the term asexual, we argue for the use of lack of sexual attraction as the primary criterion to define asexuality.     

Adult Children of Same-Sex and Heterosexual Couples: Demographic “Thriving”

ABSTRACT

Prior research comparing children of same-sex and heterosexual couples is limited by methodological issues such as not including male same-sex couples and not using appropriate comparison groups of heterosexual parents. The current study addresses these limitations by examining differences in demographic characteristics between adult children of female same-sex couples, male same-sex couples, and heterosexual couples (recruited from siblings), using data reported by adult children's parents drawn from a matched longitudinal cohort. Demographic variables include employment, education, religion, and familial status. Results reveal few differences between adult children of same-sex couples and those of heterosexual couples, and no differences between children of female-female couples and male-male couples.     

Homophobic Bullying and Same-Sex Desire in Anglo-American Schools: An Historical Perspective

SUMMARY

Homophobic bullying has come into new prominence given its alleged connection to several recent acts of school violence. This article traces the historiography of homophobic bullying, both in recent years and with reference to the original era of concern over this problem, Victorian England. As can be seen through novels and autobiographies of school life, Victorians linked bullying and sexuality in several important ways. Their traditional understanding actually supported many acts of bullying as a way to teach boys accepted codes of masculine behavior. In the late- and post-Victorian era, growing scientific investigation into human sexual behavior and increasing openness about homosexuality changed this picture to some extent, leading writers to understand bullying as a product of the bully's repressed same-sex desires. Both these views persist today and provide a stimulating context for present-day investigations of homophobic bullying.