Adolescence is a remarkable period of development and learning, a time when youths explore and adapt to changes in their social worlds and begin to form a sense of who they are and hope to be. It is a time when they first demonstrate a dramatic adaptability to the unique cognitive, emotional, physical, social and sexual demands placed on them as they transition from dependence on their parents or caregivers to relative independence. It is also, unfortunately, a time when the emergence of most mental health problems peaks.