The early adolescence period starts at age 10 - 14 years old. The changes that happen will be obvious. Brain development start earlier, 12 - 18 months earlier than boys. They may fall victim to, or participate in, bullying, and they may also feel confused about their own personal and sexual identity.
The late adolescence period starts at age 15 - 19 years old. The major physical changes usually have occured now but the body is developing. Risks are taken such as drugs and alcohol. Girls late adolescence is tended to be at a higher risk than boys are.
