Diffusion of Responsibility:The tendency for people to feel less personally responsible for action or inaction when others are present, leading to a reduced likelihood of intervention.
Pluralistic Ignorance:A situation in which a majority of group members privately reject a norm, but incorrectly assume that most others accept it, leading them to act in accordance with the wrong norm.
Audience Inhibition: The tendency for individuals to be less likely to take action in an emergency situation when there are other people present, due to concerns about appearing incompetent or foolish.