توضیحات:

The teenage period is much talked about, and parents sometimes consider it with some concern.
A problematic age, a difficult age, a period of crisis, etc., although the realities hidden behind these representations of adolescence are often very disparate, they are nonetheless based on some unquestionable truths, which are becoming better known.
The emergence of these fundamental truths about adolescence owes much to the progress of our knowledge about the functioning of the brain and the hormonal system.