The bystander effect, also known as the decentralized responsibility effect, refers to the suppression of rescue behaviors caused by the presence of others in an emergency. According to the above definition, the following situations are in line with the onlooker effect:. ['A truck rollover occurred on the highway, and everyone helped the truck driver Xiao Yang to protect the cargo from looting.', 'Occasionally a pedestrian falls on the road, Xiao Li sees no witnesses around him and is afraid to help.', 'Xiao Zhang urged his wife to call the police when a fire broke out near the supermarket. His wife answered that someone must have called the police.', 'Someone fell into the water at the seaside, and the lifeguard Xiao Wang ran and shouted, reminding the onlookers not to rush into the water for rescue.']