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Gender identity

life science Maturity 11-13 Next article →

Gender identity is a person's internal sense of their own gender. This feeling can match the sex a person was born with. It can also be different from their assigned sex. Some people use words like transgender, non-binary, or genderqueer to describe themselves. Most societies use a gender binary, which divides attributes into male or female. This includes expectations for masculinity and femininity. People may also express their gender through their appearance or behavior. However, how someone looks does not always show how they feel inside.

Scientists study how this sense of self forms in children. Most experts agree that core gender identity is firm by age three. Some say it develops very quickly in early childhood. It may become hard to change by age three or four. One theory says children go through three main stages of development. First, toddlers learn about social characteristics. Next, between ages five and seven, their identity becomes more rigid. Finally, after this peak, social roles may become more relaxed again.

Researchers have debated whether nature or nurture shapes this identity. Nature refers to biological factors like genes and hormones. Nurture refers to social factors like family and culture. In 1964, Robert J. Stoller coined the term gender identity. Psychologist John Money later helped make the term popular. Money once believed that children were a blank slate. He thought parents could decide a baby's gender through upbringing. This idea was later challenged by other scientists.

One famous case involved a boy named David Reimer. He was born in 1965 and lost his male genitalia as a baby. John Money advised his parents to raise him as a girl. Reimer grew up as a girl for many years. However, he later rejected this identity and returned to living as a male. This case showed that nurture might not override biology. Another study looked at fourteen genetic males raised as girls. Six of them later changed their identity to male. Most of those raised as females stayed female.

Today, we know that biology plays a big role. Hormones in the womb can affect how the brain grows. There is evidence that certain brain structures are linked to gender identity. For example, some parts of the brain in transgender people look more like their true identity. Studies show that certain brain volumes can be different based on these biological factors. These findings help us understand that gender identity is deeply rooted. It is a complex part of being human.

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