She found that mothers who used devices during the exercise started 20 percent fewer verbal and 39 percent fewer nonverbal interactions with their children.

她发现，在实验期间使用电子设备的母亲与孩子进行的语言交流减少了20%，进行的非语言交流减少了39%。

She found that mothers who sued devices during the exercise started 20 percent fewer verbal and 39 percent fewer nonverbal interactions with their children.

她发现，在实验期间使用电子设备的母亲与孩子进行的语言交流减少了20%，进行的非语言交流减少了39%。