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 ...

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 ...

A recent study provides evidence that some results of behavioral experiments with insects cannot be fully reproduced. So far, possible reproducibility problems have been little discussed in this ...

When biologists study cooperation in animals, they usually offer just a single task at a time. But what happens when animals can choose among several opportunities to work together? Biologists at ...

A meadow grasshopper (Pseudochorthippus parallelus). This species is widespread across most of Europe and is commonly used as a model organism in evolutionary biology. If an experiment is repeated ...

When only one cooperation device was available, almost all cooperation took place between two young males (left). When three or five devices were offered, cooperation became much more evenly ...