TED: Sarah-Jayne Blakemore: The mysterious workings of the adolescent brain - Sarah-Jayne Blakemore (2012)

Summary: Why do teenagers seem so much more impulsive, so much less self-aware than grown-ups? Cognitive neuroscientist Sarah-Jayne Blakemore compares the prefrontal cortex in adolescents to that of adults, to show us how typically “teenage” behavior is caused by the growing and developing brain.