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Gender identity

life science Maturity 11-13 Next article →

Gender identity is a person's internal, personal sense of their own gender. This identity may correspond to the sex a person was assigned at birth. However, it can also differ from that assigned sex. While many people have a gender identity that matches their biological sex, others do not. Some people identify as transgender, non-binary, or genderqueer. These terms describe people who do not identify with the gender associated with their biological sex. In many societies, a gender binary exists. This is a system that divides attributes into male and female categories. This binary includes expectations for masculinity and femininity in many areas of life.

Understanding the difference between identity and expression is very important. Gender expression refers to how a person shows their gender through behaviors, attitudes, and appearances. A person might act in ways that match a specific gender role. However, this expression does not always reflect their internal gender identity. Gender identity is about how a person feels inside. It is a distinct concept from how they present themselves to the world. Scientists and psychologists study these differences to better understand human development and social structures.

Researchers have studied when gender identity begins to form in children. Most experts agree that core gender identity is firmly established by age three. Some researchers suggest that children may show awareness of gender as early as 18 to 24 months. Others, like Lawrence Kohlberg, argued that it does not form until age three. One model by Martin and Ruble describes three specific developmental stages. First, toddlers and preschoolers learn about socialized characteristics. Second, between ages five and seven, identity becomes consolidated and rigid. Third, after this peak of rigidity, social roles may become more fluid again.

Another researcher, Barbara Newmann, proposed a four-part process for development. This includes understanding the concept of gender and learning gender role stereotypes. It also involves identifying with parents and forming a gender preference. The term "gender identity" was first coined by psychiatry professor Robert J. Stoller in 1964. Psychologist John Money later helped make the term popular. These early studies helped shape how modern science views the relationship between biology and social roles.

There is an ongoing debate in psychology known as "nature versus nurture." This debate asks if identity comes from biology or social environment. Social learning theory suggests children learn through observing and imitating others. They may be rewarded or punished for certain behaviors, which shapes their identity. On the other hand, biological theories focus on innate factors. There is increasing evidence that hormones in the womb affect brain organization. Genetic factors also play a role, as suggested by large-scale twin studies.

A famous historical case involves David Reimer, born in 1965. After a medical accident, Reimer lost his male genitalia as an infant. John Money believed that infants were a "blank slate." He argued that parents could decide a child's gender through upbringing. Based on this, Reimer was raised as a girl. However, Reimer eventually rejected this identity and returned to living as a male. This case challenged the idea that nurture could override nature. It showed that biological factors are very powerful in shaping identity.

Modern science provides more evidence for the biological basis of gender. Studies of brain structures show interesting patterns in transgender individuals. For example, some areas of the brain in trans women are more similar to those in cisgender women. Research has also looked at the volume of the BSTc. This is a part of the brain's basal ganglia affected by prenatal hormones. In some studies, the volume of this structure in trans women was similar to women's rather than men's. These findings suggest that gender identity has a durable biological element.

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