"For the adults, the presence of friends has no effect. But for adolescents, just having friends nearby doubles the number of risks they take. We’ve found that a certain part of the brain is activated by the presence of peers in adolescents, but not in adults."in reference to:
"Laurence Steinberg, a developmental psychologist at Temple University in Philadelphia, is one of the leading experts in the United States on adolescent behavior and adolescent brain biology."
- A Conversation With Laurence Steinberg - Developmental Psychologist at Temple and Expert on Adolescents - Interview - NYTimes.com (view on Google Sidewiki)