"The bystander effect" (psychological phenomenon)

The bystander effect is a psychological phenomenon where individuals are less likely to help someone in need when others are nearby. This occurs because people assume someone else will take responsibility, leading to diffusion of responsibility. Additionally, uncertainty about the situation and fear of making a mistake can cause hesitation. The larger the crowd, the less personal responsibility each person feels, reducing the chances of intervention. This effect highlights how group dynamics and social cues influence helping behavior, often resulting in inaction during emergencies despite the presence of witnesses.