What factor did Darley and Latane identify as impacting bystander intervention?

Darley and Latane identified social influence and diffusion of responsibility as critical factors affecting bystander intervention. Their research demonstrated that when an individual is in a group and observes an emergency situation, they are less likely to intervene than if they were alone. This phenomenon occurs due to social influence, as individuals often look to others for cues on how to respond in ambiguous situations. If others are present and appear unconcerned or do not take action, individuals may feel a diminished sense of urgency or responsibility to intervene themselves. This diffusion of responsibility suggests that people feel less accountable when there are others around who could also take action. Thus, the presence of multiple witnesses can lead to inaction, as each individual assumes someone else will help.

In the context of bystander intervention, this means that understanding these social dynamics is crucial for comprehending why individuals may fail to act in emergencies, particularly when they are in group settings. The other factors mentioned in the options, such as the individual’s awareness of the situation, physical proximity, and perceived severity of the emergency, certainly play a role in the decision-making process, but they do not encapsulate the broader impact of social pressures and shared responsibility that Darley and Latane specifically highlighted in their investigations.