Social psychologists believe the bystander effect can apply to a number of everyday situations. For example, on a busy sidewalk, you might not give money to a homeless man (or help someone who falls down). On a crowded subway, you may not give up your seat to an elderly person. On the highway, you might choose not to stop and help someone change a flat tire. In these situations, you and the other bystanders feel less responsible because so many people are around to help, so no one ends up helping at all.