Project Summary: Watch Frontline: Inside the Teenage Brain. Discuss the following questions: 1. Explain the ‘use it or lose it’ principle in relation to brain development. 2. In the study completed at McLean Hospital, explain how teen's brains differed from the adult brain. 3. Based on the findings of the McLean study, explain how miscommunication between teens and adults may occur. 4. Briefly discuss the findings and implications of the sleep study. 5. According to this video, what makes the biggest difference in a teen's life?