Final answer:
Theorists who focus on the development of gender identities often employ gender theory, citing the importance of cultural norms and social performances, as represented in the theories of Judith Butler and others. Psychosexual neutrality and queer theory also provide insight into gender identity formation.
Step-by-step explanation:
Theorists who emphasize how one comes to feel like a male or female are often working within the scope of gender theory. This approach examines the social and cultural constructions of gender identities, as seen in the work of Judith Butler and others.
These theorists consider gender as a series of norms and performances, rather than as essentialist, fixed categories. Dr. John Money's theory of psychosexual neutrality plays a role here, proposing that human beings start as neutral with respect to gender and only come to identify with a particular gender through language acquisition and socialization.
Additionally, efforts like those discussed in 'Gender and Sexuality in Muslim Cultures' show the ways in which cultural contexts can idealize certain forms of masculinity and femininity, and how governmental and social support structures may intervene to help individuals align with these idealized norms.
Queer theory further compounds this discussion by questioning the rigid interpretations of sex, gender, and sexuality, and opens new ways of understanding these concepts beyond traditional binaries.