1.1 A time of rapid change
When does a child become an adolescent, and when does adolescence end? These may sound like simple questions, but the answers are not simple. Here are a few definitions of the timing of adolescence. Click on each box to see the explanation. There is a long description button below the figure if this is easier to learn from.
There are many ways of viewing adolescence, and at its core it represents a time of rapid development initiated by hormonal changes. Next, you consider some of the detail.