Gender identity formation is the process by which individuals come to understand and express their gender identity, which is their internal sense of being male, female, or non-binary.

Chromosomes, hormones, and brain structure are all biological factors that have been found to influence gender identity.

Gender roles, gender stereotypes, and gender norms are all terms used to describe the social and cultural expectations associated with being male or female.

Cognitive development, social learning, and self-concept are all psychological factors that have been found to influence gender identity.

Gender role development is the process by which individuals come to understand and express their gender role, which is the set of behaviors, attitudes, and expectations associated with being male or female in a particular culture.

Family, peers, and media are all social factors that have been found to influence gender identity.

Gender schema theory is the theory that individuals develop cognitive schemas about gender that help them to organize and interpret information about gender.

Gender schema theory has been criticized for being too simplistic, not accounting for individual differences, and not being supported by research.

Sexual orientation development is the process by which individuals come to understand and express their sexual orientation, which is their enduring physical, romantic, and/or emotional attraction to other people.

Biology, psychology, and social factors have all been found to influence sexual orientation development.

The biosocial theory of sexual orientation is the theory that sexual orientation is determined by a combination of biological and psychological factors.

The biosocial theory of sexual orientation has been criticized for being too simplistic, not accounting for individual differences, and not being supported by research.

Gender and sexual identity development is the process by which individuals come to understand and express their gender identity and sexual orientation.

Biology, psychology, and social factors have all been found to influence gender and sexual identity development.

The biosocial theory of gender and sexual identity is the theory that gender and sexual identity are determined by a combination of biological and psychological factors.