12/01/2025
Understanding the Bystander Effect
Social psychologists Bibb Latané and John Darley popularized the concept of the bystander effect following the infamous murder of Kitty Genovese in New York City in 1964. The 28-year-old woman was stabbed to death outside her apartment; at the time, it was reported that dozens of neighbors failed to step in to assist or call the police.
Latané and Darley attributed the bystander effect to two factors: diffusion of responsibility and social influence. The perceived diffusion of responsibility means that the more onlookers there are, the less personal responsibility individuals will feel to take action. Social influence means that individuals monitor the behavior of those around them to determine how to act.
Why do people fail to help in an emergency?
It’s natural for people to freeze or go into shock when seeing someone having an emergency or being attacked. This is usually a response to fear—the fear that you are too weak to help, that you might be misunderstanding the context and seeing a threat where there is none, or even that intervening will put your own life in danger.
What situational factors contribute to the bystander effect?
It can be hard to tease out the many reasons people fail to take action, but when it comes to sexual assault against women, research has shown that witnesses who are male, hold sexist attitudes, or are under the influence of drugs or alcohol are less likely to actively help a woman who seems too incapacitated to consent to sexual activity.
Source psychology today.com
https://www.psychologytoday.com/gb/basics/bystander-effect
