The Bystander Effect
Week 5 of Social Psychology course deals with conflict, peacemaking and interventions. I wouldn't cover this material, but there was one important phenomenon discussed in the lectures which I'd like to mention. It is the bystander effect. It refers to situations in which people do not offer any help to a victim who is being victimized or is suffering in front of their eyes. Studies have shown that the probability of people offering to help is inversely related to the number of bystanders. Wikipedia has a good entry on this topic, and I'll refer the readers to that.