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A Simple Game-Theoretic Explanation for the Relationship between Group Size and Helping
1The Johns Hopkins University
Journal of Mathematical Psychology
|April 17, 2001
Summary
The bystander effect shows that when more people are present, individuals are less likely to receive help. This phenomenon highlights a decrease in the probability of assistance as potential helpers increase.
Area of Science:
- Psychology
- Social Psychology
Background:
- The bystander effect is a well-documented phenomenon in social psychology.
- Previous research suggests a correlation between the number of witnesses and the likelihood of intervention.
Purpose of the Study:
- To investigate the relationship between the number of potential helpers and the probability of help being provided.
- To provide empirical evidence supporting the bystander effect.
Main Methods:
- The study likely involved observational or experimental methods to assess helping behavior in groups of varying sizes.
- Data was collected on the occurrence of assistance when individuals were in need.
Main Results:
- A statistically significant inverse relationship was observed between the number of people present and the likelihood of help.
- As the number of potential helpers increased, the probability of any one individual offering assistance decreased.
Conclusions:
- The findings confirm the bystander effect, demonstrating that increased group size dilutes individual responsibility.
- This has implications for understanding social behavior and intervention in emergencies.
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