Bystander Effect

Case No 1(most recent case)

Yue Yue (悦悦)

In October 2011, a two-year-old girl, Yue Yue, was hit by a small, white van in the city of Foshan, then run over by a large truck when she was not moved by bystanders. A total of 18 people ignored her, some going so far as to walk around the blood, and the girl was left for 7 minutes before a recycler, Chen Xianmei, picked up the toddler and called for help.

Case No 2

Simone Back

On Christmas Day 2010, Brighton UK woman, Simone Back, posted a suicide note on the social networking site Facebook. Several of her 1,082 Facebook friends commented on her status, but none of them called for emergency services or went to check on her personally. Some of her friends lived within walking distance of Simone's flat. Her body was discovered by police the next day. The incident likely reflects a popular myth about suicide, that a person who talks about killing themselves is unlikely to do it.

Case No 2

Hugo Alfredo Tale-Yax

In April 2010 Hugo Alfredo Tale-Yax was stabbed to death in New York City after coming to the aid of a woman who was being attacked by a robber. Yax was on the sidewalk for more than an hour before firefighters arrived. Almost twenty-five people walked by while he lay dying on a sidewalk in Queens, several stared at Yax, one of them took pictures, however none of them helped or called emergency services

Case No 3

Sergio Aguiar

On June 16, 2008, on a country road outside Turlock, California, friends, family and strangers, including a volunteer fire chief, stood by as Sergio Aguiar methodically stomped his two-year-old son Axel Casian to death, explaining in a calm voice that he "had to get the demons out" of the boy. He stopped at one point to turn on the hazard lights on his truck. No one moved to take the child or attack Aguiar. Witnesses said they were all afraid to intervene because Aguiar "might have something in his pocket", although some people looked for rocks or boards hoping to find something to subdue him. The fire chief's fiancee called 911. Police officer Jerry Ramar arrived by helicopter and told Aguiar to stop. Aguiar gave Ramar the finger and Ramar shot him in the head.Police officers and psychologists later explained that the inaction of the crowd was justified in that "ordinary people aren't going to tackle a psychotic," that they were not "psychologically prepared" to intervene, and that being frozen in indecision and fear is a normal reaction.


Case No 4
New York’s Central Park Parade

In June 2000 following a parade (The Puerto Rican Day parade) alongside New York’s Central Park which more than a million locals and tourists had attended, a pack of alcohol-fueled men became sexually aggressive. They began to grope and strip nearly 60 women. At least two victims approached nearby police who did nothing to help them. Nobody dialed 911 or offered assistance.



More Cases Read here:
http://en.wikipedia.org/wiki/Bystander_effect