When you're tired, your ability to interpret subtle expressions of happiness and sadness can begin to deteriorate, researchers have found. However, the ability to read more primitive survival-based ...

Evolution has designed animals so that they have distinct expressions which reflect their emotional state. These expressions serve a communication purpose that allows us to select appropriate ...

Facial expressions are an important “part of our biological heritage,” but many of us have forgotten how to interpret them, says Richard Conniff, a regular contributor to the magazine. It may be that ...

Horses understand human facial expressions, and they can tell the difference between happy and angry faces, according to a new Biology Letters study published this week. The rest of this article is ...

March 23 (UPI) --Researchers at the University of Arizona found an association between sleep deprivation and the ability to recognize facial expressions. The study was based on data from 54 ...

A critical way we maintain relationships is by being in tune with others—reading facial expressions, interpreting emotions, and responding. But this has been tough over the last year. We haven’t seen ...