Gender and sexual identity play a significant role in the lives of developing youth. The developments of gender and sexual identities are shaped by a variety of factors including, but not limited to, biological, cognitive, and social elements. It is crucial to consider that gender and sexual minority individuals face additional complexities in the two processes of gender identity and sexual identity development. Cisgender identity development is most commonly understood with the help of early cognitive and social theories, although biological components play a part as well. Specifically, the theories of Lawrence Kohlberg, Sandra Bem, Alfred Bandura, and David Buss have made significant contributions to the understanding of cisgender identity development. Modern transgender identity development models are helpful in exploring transgender identity formation with the most popular being the Transgender Emergence Model founded by Arlene Lev. Similar to cisgender identity development, heterosexual identity development is typically understood with the help of early psychosocial theories, namely that of Erik Erikson. Sexual minority identity development is often comprehended using stage models and life-span models. Sexual minority stage models build off the work of Erik Erikson, with one of the most popular being the Cass Model of Gay and Lesbian Identity Development. Offering more flexibility than stage models and allowing for fluid sexual identity, life-span models, like the D’Augelli model, are often more popular choices for modern exploration of sexual minority identity development. As both sexual and gender identity spectrums are continuing to expand, there also comes a need for an exploration of the relationship between sexual and gender identity development, particularly among sexual minority populations.
