Related Experiment Video
Updated: Aug 18, 2026

08:11
Vascularized Composite Upper Limb Allograft Harvesting for Proximal Arm Allotransplantation
Published on: June 13, 2025
The greatest volunteer of all
JEMS : a Journal of Emergency Medical Services
|May 20, 2005
Abstract
No abstract available in PubMed .
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Altruistic behaviors are “unselfish” behaviors—those that help another individual at the expense of the individual carrying out the behavior. Despite the negative consequences for the altruistic animal, these behaviors are thought to have evolved for several reasons.
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Voluntary behavior with the intent to help other people is called prosocial behavior. Why do people help other people? Is personal benefit such as feeling good about oneself the only reason people help one another?
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Bystander Effect
The discussion of bullying highlights the problem of witnesses not intervening to help a victim. This is a common occurrence, as the following well-publicized event demonstrates. In 1964, in Queens, New York, a 19-year-old woman named Kitty Genovese was attacked by a person with a knife near the back entrance to her apartment building and again in the hallway inside her apartment building. When the attack occurred, she screamed for help numerous times and eventually died from her stab wounds.
Milgram's Obedience to Authority
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National Nursing Organizations I
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