Why People Stand By: A Comprehensive Study About the Bystander Effect

Bystander effect is the phenomenon that describes how, when more people are around, each individual is less likely to intervene. While the bystander effect is an integral part of studying social behaviors and group thinking, the many caveats it presents itself with must be considered. Every situation differs based on location, people, and circumstance, so the idea of the bystander effect is not valid in every scenario, as evidenced by the various counter-examples and contradictory findings researchers have discovered. However, the bystander effect is still very important to study because understanding what encourages/prevents people from helping is critical to decrease the effect of the bystander effect to promote helping behavior. In this paper, we discuss the various factors that affect the prevalence of the bystander effect: perceived physical and social harm to the helper, responsibility diffusion, and perceived helpfulness.