Bystander effect and diffusion of responsibility
When an emergency is witnessed by a large crowd, each person is less likely to help than if they were alone. The main explanation is:
Answer A: explanation for every choice
A
Correct. With more bystanders, each person feels less personally responsible to act.
B
Social loafing is reduced effort on pooled group tasks.
C
Groupthink is a cohesive group suppressing dissent to reach consensus.
D
Deindividuation is loss of self-awareness and restraint in groups, often leading to antisocial behavior.
TakeawayMore bystanders → each feels less responsible.
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Reviewed 2026-11-05 by a medical student. Spot an error? Report it with question ID ps66.