哈欠——在人类身上发生最为频繁的生理现象之一,有史以来对它的解释都似乎有支支吾吾、语焉不详的倾向,牛津词典仅简单将其描述为因厌倦而生,而两本重要的生理学手册——《格雷的人体剖析》和《人类生物学百科》直到1990年以后的版本也并未设置该词条的索引。对此,美国天普大学的心理学家Ronald Baenninger有点看不过去了,1997年他专门撰文,认真地探讨 Yawns - one of the most frequent physical phenomena that occur in mankind, its history seems to have had its own misleading, unexplained tendencies. The Oxford Dictionary simply describes it as boredom, and two important Physiological manuals - “Gray’s Human Body Analysis” and “Encyclopedia of Human Biology” until after 1990 version also did not set the index of the entry. In this regard, the United States Temple University psychologist Ronald Baenninger a bit of a glimpse, in 1997, he devoted to articles, serious discussion