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Psychology

The Bystander Effect in Emergency Response and Group Dynamics

Quick fact

The term 'bystander effect' was coined after the 1964 murder of Kitty Genovese, where 38 witnesses reportedly failed to call for help. Subsequent experiments by John Darley and Bibb Latané found that the presence of others significantly decreases the likelihood of any individual intervening.

Why this is interesting

Imagine you are in a crowded street and someone collapses in front of you. Do you think you would help? Most people believe they would, but studies show that the more people are present, the less likely any one person is to act. Why does our sense of responsibility seem to shrink when we are in a group?