closefriendsandfamilyaremorelikelythanacquaintancesorstrangerstocatchsomeoneyawning， Livescience.com reported .根据热点科学网站，Anewstudysuggeststhisyawningcontagionis，in part，the result of empathy， inwhichweattempttoseethingsfromanotherpersonsangleandrespondtothatpersonsemotions .的研究者说，这种哈欠感染是由同理心引起的。也就是说，我们打算这么做。

whileyawnsdonotseemtohaveaconnectionwithanyparticularemotion (unlike，say，smiles， which could indicate happiness ) insomewaysweareforminganemotionalconnectionbymickingayawn，matthewcampbellofemoryuniversitysaid bymimickingtheyawnwebecomebetterabletounderstandhowtired，perhaps，or bored the other person is .通过向对方打哈欠，我们更好地了解对方有多痛苦。

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