bystander intervention in emergencies- diffusion of responsibility (darley and latane)

Bystander Intervention in Emergencies: Diffusion of Responsibility

Research conducted by John M. Darley and Bibb Latané (1968) to explore the phenomenon of bystander intervention in emergency situations.

Overview of real-life incident: Kitty Genovese, a woman murdered in New York City while 38 witnesses failed to intervene or call for help.
Traditional explanations for bystander inaction include apathy, alienation, and moral decay.
This study proposes that the presence of other bystanders may diffuse responsibility, affecting the likelihood and speed of providing help.

Experiment Setup: Participants overheard what appeared to be an epileptic seizure either alone or with 1 to 4 unseen others.
As number of bystanders increased, individual feelings of responsibility decreased, leading to slower reporting of the emergency.
Statistical Results: Presence of others significantly lowered the speed of reporting (p < .01).
Gender differences in response speed were negligible; males and females reported similarly regardless of the presence of different sexes among bystanders.

Diffusion of Responsibility: When multiple bystanders are present, each assumes someone else will intervene, leading to inaction.
Self-rationalization: Individuals may convince themselves that someone else is already helping to justify their own inaction.
Group size directly correlates to the likelihood of helping; as group size increases, helping behavior decreases.

Procedure Overview: Subjects believed they were participating in a discussion about personal problems, where a participant had a seizure.
Victim's breakdown progressively worsened over 70 seconds before the tape cut off.
Independent Variables: Number of bystanders (2, 3, or 6), their perceived gender, and medical competence.
Dependent Variable: Speed at which subjects reported the emergency.

Percentage of Responses & Speed:
- Group of size 2: 85% responded before cut-off, average response time of 52 seconds.
- Group of size 3: 62% responded before cut-off, average response time of 93 seconds.
- Group of size 6: 31% responded before cut-off, average response time of 166 seconds.
Realignment of perception indicates that increased presence of observers led to a significant decrease in urgency to act.

Variations in other bystanders' gender and medical training had minimal impact on speed of response.
The perceived responsibility in indirect intervention remained equally distributed regardless of the other bystander’s characteristics.

Bystanders often felt conflicted emotionally—fear of embarrassment, concern for their own safety, and guilt about inaction.
Many subjects experienced nervousness but failed to translate this into action due to the perceived norm that others would intervene.
Participants' demeanor suggested emotional arousal rather than apathy; they wrestled with indecision during the emergency.

The study counters traditional views attributing inaction in emergencies to a lack of concern or societal decay.
Highlights the situational pressures influencing human behavior in crises.
Suggests that understanding situational forces influencing hesitation may empower individuals to overcome the reluctance to help.