It can catch someone's attention in a crowded room, "Eye contact and smile" can signal availability and confidence, a common-sense notion supported in studies by psychologist Monica Moore.

心理学家莫妮卡·摩尔的研究论证了一个常识：它可以在拥挤的房间里吸引别人的注意力，“眼神交流和保持微笑”可以展现你的亲切和自信。