Having good friendships may make for a healthier gut microbiome

Social connections are essential for good health and well-being in social animals, such as ourselves and other primates. There is also increasing evidence that the gut microbiome—through the so-called "gut-brain axis"—plays ...

Why do we learn to reward cooperation?

Researchers at the Max Planck Institute in Plön show that reputation plays a key role in determining which rewarding policies people adopt. Using game theory, they explain why individuals learn to use rewards to specifically ...