In a close-up headshot, Serena Williams’ eyes are pressed tensely closed; her mouth is wide open, teeth bared. Her face looks enraged. Now zoom out: The tennis star is on the court, racket in hand, fist clenched in victory. She’s not angry. She’s ecstatic, having just beaten her sister Venus at the 2008 U.S. Open.

“Humans are exquisitely sensitive to context, and that can vary dramatically shape what is seen in a face,” says psychologist Lisa Feldman Barrett of Northeastern University and Massachusetts General Hospital/Harvard School of Medicine. “Strip away the context, and it is difficult to accurately perceive emotion in a face.” That is the argument of a new paper by Barrett, her graduate student Maria Gendron, and Batja Mesquita of the University of Leuven in Belgium. It appears in October’s Current Directions in Psychological Science, a journal published by the Association for Psychological Science.

The paper—reviewing a handful of hundreds of studies supporting the authors’ position, says Barrett—refutes the contention that there are six to 10 biologically basic emotions, each encoded in a particular facial arrangement, which can be read easily in an image of a disembodied face by anyone, anywhere.

Facial-emotional perception is influenced by many kinds of contexts, says the paper, including conceptual information and sense stimuli. A scowl can be read as fear if a dangerous situation is described or as disgust if the posture of its body indicates reaction to a soiled object. Eye-tracking experiments show that, depending on the meaning derived from the context, people focus on different salient facial features. Language aids facial perception, as well. Study participants routinely did better naming the emotions in pouting, sneering, or smiling faces when the experimenter supplied words to choose from than when they had to come up with the words themselves. [continue reading…]