Facial mimicry refers to automatic copying of another person’s facial expressions. When one person smiles, a listener may ...

Hosts of brood parasites defend their nests against parasitism by aggression and subsequently, if parasitized, by rejection of the parasite egg or nestling. Cuckoos have evolved plumage mimicry with ...

In the research reported here, we investigated how suspicious nonverbal cues from other people can trigger feelings of physical coldness. There exist implicit standards for how much nonverbal ...