Genetic and Environmental Influences on Female Sexual Orientation, Childhood Gender Typicality and Adult Gender Identity

Background: Human sexual orientation is influenced by genetic and non-shared environmental factors as are two important psychological correlates – childhood gender typicality (CGT) and adult gender identity (AGI). However, researchers have been unable to resolve the genetic and non-genetic components that contribute to the covariation between these traits, particularly in women. Methodology/Principal Findings: Here we performed a multivariate genetic analysis in a large sample of British female twins (N = 4,426) who completed a questionnaire assessing sexual attraction, CGT and AGI. Univariate genetic models indicated modest genetic influences on sexual attraction (25%), AGI (11%) and CGT (31%). For the multivariate analyses, a common pathway model best fitted the data. Conclusions/Significance: This indicated that a single latent variable influenced by a genetic component and common nonshared environmental component explained the association between the three traits but there was substantial measurement error. These findings highlight common developmental factors affecting differences in sexual orientation

Intersexuality and Trans-Identities within the Diversity Management Discourse

Within both the scientific discourse on workforce diversity, and diversity management practice, intersexuality and transgender issues have hitherto remained marginalized topics. This chapter gives an overview of the discourses on both phenomena, and proposes starting points for more inclusive organizational diversity management initiatives. It is shown that both topics represent different aspects of the category of "gender". The common practice of conceptually lumping together intersexuality, transgenderism, and sexual orientation can be seen as one important reason that intersexuality and transgenderism are rarely considered in organizational diversity management programs in terms of concrete action. Against this background, a modified, and more integrated approach to structuring the workforce alongside the different dimensions of diversity is proposed. It is shown that the categories of "biological sex and gender", "gender identity", and "sexual orientation" cannot be regarded as being separate from each other. They represent, rather, an interrelated organizational field of action that should be considered as being one interrelated topic for organizational diversity practices. This chapter derives this claim theoretically and discusses the consequences for organizational diversity management practices. For most organizations, this would mean a fundamental rethinking of their goals, in terms of workforce diversity, and the shaping of their diversity management programs