Following the widely reported 1964 murder of Kitty Genovese, psychologists John Darley and Bibb Latané ran a series of experiments that identified a counterintuitive pattern: the more people who witness an emergency, the less likely any individual is to intervene.
Diffusion of Responsibility
When multiple people are present, each individually feels less personally responsible for acting, assuming someone else will step in.
Pluralistic Ignorance
People look to others’ reactions to judge whether a situation is actually an emergency. If everyone else looks calm, each individual assumes it must not be serious — even if everyone privately feels uneasy.
How to Counteract It in the Moment
Research consistently shows that singling out one specific bystander — by pointing and giving a direct instruction, rather than a general call for help — reliably breaks the diffusion effect.
