Final answer:
The bystander effect indicates that people are less likely to offer help in emergency situations when others are present due to the diffusion of responsibility. Social psychologists have found that the more bystanders there are, the less likely any one person is to offer aid.
Step-by-step explanation:
The bystander effect predicts that a person is less likely to provide help when there are other bystanders. This phenomenon is a result of the diffusion of responsibility, where the presence of others leads an individual to assume that someone else will intervene or has already taken action. Social psychologists have studied this effect, noting that the likelihood of someone intervening decreases as the number of witnesses increases.
The bystander effect predicts that a person is less likely to provide help when there are other bystanders. This means that when there are more people around, individuals are more likely to assume that someone else will help and therefore feel less responsible themselves. This phenomenon is known as the diffusion of responsibility.