目前一项新的研究发现大多数孩子对传染性打哈欠不敏感，直到他们4岁左右——而且患自闭症的孩子也比其他孩子不太可能受哈欠传染。

Now a new study has found that most children aren't susceptible to contagious yawning until they're about 4 years old — and that children with autism are less likely to yawn contagiously than others.

youdao

目前一项新的研究发现大多数孩子对传染性打哈欠不敏感，直到他们4岁左右——而且患自闭症的孩子也比其他孩子不太可能受哈欠传染。

Now a new study has found that most children aren't susceptible to contagious yawning until they're about 4 years old — and that children with autism are less likely to yawn contagiously than others.

youdao