The expression on a person’s face might sometimes affect other persons’ perceptions of that person. So suggests this study:
“Forming Impressions: Effects of Facial Expression and Gender Stereotypes,” Tay Hack, Psychological Reports, vol. 114, no. 2, 2014, pp. 1-15. The author, at Angelo State University, writes:
“In conclusion, the present research adds to existing knowledge of how people form impressions of men and women…. The findings suggest that women may be perceived more favorably when displaying a smile.”