[单项选择]
Does contagious yawning mean you’re nice
You’re in a conversation with another person and he casually yawns. As you wonder whether he’s bored with the discussion, you find that you’re yawning, too. A man walking by, sees you yawn, and pretty soon he yawns. It’s carried on and on, passing from one person to another in a domino effect. Science is still investigating exactly what makes us yawn, but it’s a well-known and little-studied fact: Yawning is contagious.
We know that much of yawning is due to suggestibility—it’s infectious. You don’t need to actually see a person yawn to involuntarily yawn yourself; hearing someone yawn or even reading about yawning can cause the same reaction. Chances are you’ll yawn at least once while reading this article.
But contagious yawning goes beyond mere suggestibility. Recent studies show that the phenomenon is also related to our predisposition toward empathy—the ability to understand a
A. the personality of the person you are talking to
B. how much empathy you feel for others
C. your reaction when you see someone yawning
D. the ability to avoid other’s influence