Dr. Lipkins helps Chase learn how to stand up for himself. The first thing she says kids who experience bullying should learn is when and where to talk back—and how to do it firmly. "We know that, 50 percent of the time, if you just say no to a bully, they'll stop," she says.

Body language can also stop a bully in his tracks. "We each have a personal space, and it's my job to protect my personal space," Dr. Lipkins says. "Body language is what your eyes are saying, what your face is saying. It's what your hands are saying. It's how loud you talk. It's how firm you talk."