What is the diffusion of responsibility?

The diffusion of responsibility is a social psychological phenomenon where individuals are less likely to take action or feel a sense of personal accountability in group situations. When more people are present, each person assumes that someone else will intervene, leading to inaction. This often occurs in emergencies or when witnessing wrongdoing, contributing to the bystander effect. Ultimately, the presence of others can diminish an individual's sense of obligation to help.