New research links lack of sleep to reduced generosity, suggesting a link between lost rest and broad social problems.

Our underestimation of how people feel receiving a small act of kindness can actual hinder us from extending those gestures, research finds.

The more uncertain we are about expectations, the more likely we are to act selfishly, a new study finds. That's key for following COVID-19 guidelines.

New research on giving shows that "people who are perceived as more attractive are more likely to give and givers are seen as more attractive."