The Purpose of Facial Expressions

true emotions. Ekman carried out experiments in which people were asked to label photos of basic facial expressions - such as a smile, frown or scowl - with words for emotions. He found, for example, that a smile represented joy and a scowl represented anger. In fact, since the 1970s Ekman has dominated the field of emotion research with his theory that when an emotion occurs, a large number of electrical impulses also occur, creating specific facial expressions and other physiological changes, such as increased or decreased heart rate or heightened blood pressure. B. Many took Ekman's work to imply that facial expressions precisely indicated people's feelings. However, this theory has been attacked by a number of psychologists, such as Alan Fridlund of the University of California, who claim that there is no one-to-one correspondence between facial expressions and emotions. Expressions evolved to set off certain behaviors in other people, says Fridlund. So, a smile may prompt people to approach, a scowl may warn them to stay away, and a look of sadness may elicit words of sympathy and reassurance. In other words, in Fridlund's view, facial expressions are inherently social - they involve not one, but two or more…