by what age does a child's gender identity develop?
- By 3 years of age. By 3 years of age, a toddler has developed gender identity. This means that he or she can identify whether they are a boy or a girl. Although this can be determined by 3 years of age, it does not mean that the child understands the significance and associations connected with the different genders. The child has more of a conscious memory, though, and can recognize the importance of his or her life.