Diffusion of Responsibility: The tendency for people to be less likely to take action in an emergency situation when there are other people present, as the responsibility to help is diffused among the group.
Social Inhibition: The tendency for people to be less likely to engage in a behavior or take action when in the presence of others, due to concerns about how they will be perceived or evaluated.
Pluralistic Ignorance: A situation where individuals incorrectly assume that others are not concerned or do not perceive a situation as an emergency, leading them to also refrain from taking action.