The adolescent period is a very busy time for both the teen and parents. There is a tremendous amount of growth that occurs during the teen years. The obvious physical growth in terms of size and strength as well as sexual development is apparent. What is not as visible in terms of appearance is the cognitive growth that occurs during this time as well. The human brain goes from weighing about two pounds during childhood to weighing about three pounds in adulthood. The growth of the brain takes place during the teen years. With that growth come new cognitive abilities that shape the typical interactions between parents and their maturing children. This article will focus primarily on these changes and the impact that this has particularly on boys.