Culture

Surveillance Cameras Debunk the Bystander Effect

A new study uses camera footage to track the frequency of bystander intervention in heated incidents in Amsterdam; Cape Town; and Lancaster, England.                            
A crowded street in central Amsterdam. Surveillance footage showed that people on busy streets are more willing to intervene in a volatile incident.Margriet Faber/AP

It’s one of the most enduring urban myths of all: If you get in trouble, don’t count on anyone nearby to help. Research dating back to the late 1960s documents how the great majority of people who witness crimes or violent behavior refuse to intervene.

Psychologists dubbed this non-response as the “bystander effect”—a phenomenon which has been replicated in scores of subsequent psychological studies. The “bystander effect” holds that the reason people don’t intervene is because we look to one another. The presence of many bystanders diffuses our own sense of personal responsibility, leading people to essentially do nothing and wait for someone else to jump in.