When biologists study cooperation in animals, they usually offer just a single task at a time. But what happens when animals ...

People with health anxiety tend to get tangled up in problematic behaviors, such as reassurance-seeking, excessive body checking and avoidance. These behaviors act like a vortex, sucking you into that ...

How witnessing aggression might affect behavior ...

If an experiment is repeated under similar conditions, the results should be the same. In reality, the situation is often different—scientists speak of a "reproducibility crisis," which affects ...