Interview: Frances Jensen on The Teenage Brain : Shots - Health News : NPR

http://www.npr.org/blogs/health/2015/01/28/381622350/why-teens-are-impulsive-addiction-prone-and-should-protect-their-brains?utm_source=facebook.com&utm_medium=social&utm_campaign=npr&utm_term=nprnews&utm_content=20150128

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