Youth is a transitional period during which one comes to grow mature from a nave child and the youth are to face radical changes of development in cognitive, physical and social aspects.

• 青少年期是个体从幼稚顽童逐渐走向成熟个体的过渡时期,他们在认知、理和社会性方面都将面对一个急骤发展变化的时期。