Psychology
Bystander Effect and Diffusion of Responsibility
Quick fact
In the infamous 1964 Kitty Genovese murder, 38 witnesses reportedly heard her screams but did not call police, sparking the study of the bystander effect.
Why this is interesting
Imagine you collapse on a busy street. Would more people around mean you get help faster? Surprisingly, research shows the opposite: the more bystanders, the less likely anyone will intervene.