When people try to hide their feelings with an inauthentic expression, they use different groups of muscles
than they do for authentic emotions.

Question

Quizplus · Accepted Answer

This is true. When people try to mask their true emotions with a fake expression, they use different muscles in their face than they do for genuine emotions. This is because producing an authentic expression involves the activation of specific facial muscles that are difficult to consciously control, whereas producing an inauthentic expression requires a different set of muscles. This difference in muscle activation can often be detected by trained observers, such as lie detection experts or those who study nonverbal communication.

When People Try to Hide Their Feelings with an Inauthentic