According to a new neuroimaging study, people who donate their kidneys to strangers have significantly different brain structures to those who don't.
A new study reports readiness to help in an emergency situation depends heavily on your personality.
Researchers report those who enter into an altruistic act, such as donating a kidney to an anonymous recipient, are more sensitive to a stranger's fear and pain.
The stress hormone cortisol reduces altruistic behaviors and alters brain activity in the dorsolateral prefrontal cortex in people with higher levels of empathy.
Researchers have designed a new math model that could help explain social behaviors in a number of difference species.