In The National Institute of Mental Health’s, “The Teen Brain: Still Under Construction” it is explained that the teen brain is still growing physically, intellectually, and hormonally. First, the teenage brain is still growing physically. It is getting larger and becoming more connected to its parts. This is evident when the author writes, “As the brain develops, the fibers connecting nerve cells are wrapped in a protein that greatly increases the speed” (1). The brain grows physically just like the rest of the body. Legs get longer, feet can get bigger, and the brain changes too, only it’s getting smarter. Second, the brain grows intellectually. Behaviors start to differ and new emotions are created. This is found when the text states, “The
