To explore this possibility, study author Timo Stein and his colleagues conducted four experiments measuring how participants cognitively processed fearful and angry facial expressions ...

A German study of prisoners incarcerated for violent crimes found that aggressive criminals were more likely to perceive neutral facial expressions as angry, which are a mix of opposing emotions.

Dogs may indeed be able to discriminate between happy and angry ... of the person's face. The investigators then tested the pups' ability to discriminate between human facial expressions by ...