This time the researchers found that dogs were more likely to yawn in response to a familiar person. They concluded that dogs can “catch” a yawn from humans and that yawning is a social rather than a stress-based behavior.
这次研究人员发现,狗在见到熟悉的人打哈欠时更容易被传染。他们得出结论称,狗会被人打哈欠的行为传染,打哈欠是一种社会行为,而非基于压力的行为。
In 2017, University of Nebraska psychologists looked at contagious yawning in shelter dogs.
2017年,内布拉斯加大学的心理学家观察了收容所的狗打哈欠传染的现象。
They found that some dogs that yawned when exposed to human yawning had elevated cortisol levels - a proxy for stress.
他们发现,被人打哈欠传染的狗皮质醇水平升高,皮质醇是一种压力荷尔蒙。
Levels of the cortisol stress hormone did not rise in dogs that didn’t yawn in response to a human yawn.
看到人打哈欠时毫无反应的狗狗体内皮质醇压力荷尔蒙水平并未升高。
This finding suggests some dogs find human yawning stressful and others do not. More research is needed to evaluate this aspect of the human-dog relationship.
这一发现表明,一些狗狗认为人打哈欠给它们带来了压力,而另一些则没有。我们还需要更多的研究来评估人与狗之间在打哈欠时产生的关联。
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