Rachel Narr wasn't popular in high school. She was no wears-pink-on-Wednesdays "Mean Girl." She wasn't the cheerleader who dated the quarterback. But she said that she had strong friendships, and one exceptionally close comrade meant a lot to Narr during her teen years. When it comes to that friend, "I suppose in many ways she is the inspiration for a lot of my work on teen friendships," said Narr, who is now a Ph.D. candidate in clinical psychology at the University of Virginia.