Passengers on an airplane spring to action when a stewardess needs help – but a neighborhood in New York City does very little when a woman is attacked. What’s different ? How can we take what we learn from the airplane and apply it to the attack? Lecturing the neighborhood residents probably won’t help. Can we do anything to the way the neighborhood is laid out to encourage interaction among residents and a greater sense of interdependency among them? We explore the topic of bystander intervention, diffusion of responsibility and the field of community psychology in this episode of The Psych Files.