An old British nursery rhyme goes: "What are little girls made of? Candy, spice, and all things lovely. What are little boys made of? Scissors, snails, and puppy dog tails." Does this mean girls are inherently beautiful, gentle, and sensitive, while boys are impulsive, mischievous, and adventurous?Knowing the Baby's Gender Early On
What ultimately determines gender?
Sex chromosomes determine gender
In terms of chromosomes, the mother has: 22 pairs of chromosomes plus one pair of sex chromosomes, where the sex chromosome is always X. The father also has 22 pairs of chromosomes plus one pair of sex chromosomes.However, the sex chromosome can be either X or Y. If the egg combines with an X-bearing sperm, the baby will be female; if it combines with a Y-bearing sperm, the baby will be male. During the first 6 weeks of pregnancy, female and male embryos show almost no differences. Starting around week 7, the fetus's genitalia begin to develop. By approximately week 11, the penis and testes are largely formed in boys, while the clitoris and labia majora/minora develop in girls.
What factors influence gender?
Gender differences are innate, but environmental influences are greater
Newborns are difficult to distinguish by appearance alone, requiring identification through clothing, names, and other cues. Growth curves show little difference between infants in their first year. However, male and female babies do exhibit distinct brain differences at birth.The brain comprises the "old brain" (limbic system—hypothalamus) and the "new brain" (neocortex). Innate differences exist in the old brain, which governs appetite, sexual desire, and emotions. Within this structure, males exhibit higher aggression than females. However, the old brain is regulated by the new brain, making environmental influences during development highly significant.The new brain, however, did not evolve to regulate gender differences but rather to enhance humanity.
When do more pronounced gender differences emerge?
Infancy under 1 year shows greater personality variation
Babies exhibit significant individual differences in physical growth and development. While some gender differences between boys and girls will be listed below, personality factors remain more crucial.After 18 months, babies begin showing gender differences, particularly in play styles. Girls reach sexual maturity earlier, but this occurs after puberty. During infancy, gender differences are relatively minor.
How do gender differences deepen?
Imitating same-sex role models reinforces gender differences
From early childhood, babies become aware of their gender and begin imitating same-sex adults.For example, when a girl sees her mother cooking, she might imitate this action during pretend play. Parents often respond with delight, saying, "How adorable!" However, if a boy mimics the same behavior, parents might comment, "That's not very boy-like!" Thus, both the child's imitation and the parents' reactions significantly influence the child.
What should parents do?
Avoid overly emphasizing gender distinctions
From infancy through early childhood, a child's gender identity is shaped not only by biological factors but also by influences from parents, grandparents, friends, television, social environments, and preschool settings. Therefore, parents should establish clear parenting principles for their child.With societal shifts, cultural expectations for male and female roles are evolving. Some parents still cling to traditional notions like "boys should be tough, girls should be gentle," but this isn't necessarily ideal. Children should be allowed to develop freely, with the core parenting principle being "what the child wants to become in the future."