RESUMO
Background: There is an agreement among individuals from different cultures in how they judge the cuteness of a face. There are observations suggesting that some preferences may be neurobiological rather than cultural. Most of the studies conducted use adult faces with a neutral expression; however, the mechanisms involved in rating cuteness are not exactly the same as those involved in the perception of attractiveness. Furthermore, it is not always taken into account that emotional expressions influence the impression on the beauty of a face. The objective of the study is to evaluate the influence of the different emotions on the perception of cuteness of children's faces. Materials and Methods: We included 60 adults and 21 children who observed 150 photographs of children's faces expressing the six basic emotions and had to rate facial cuteness. Results: Participants gave the highest cuteness score to faces with happy emotions (mean [M] = 6.89, 95% confidence interval [CI] 6.48-7.30) and the lowest to those that expressed negative emotions (M = 5.32, 95% CI 4.87-5.78, t(160) = 5.08, P <.001). This was evidenced in adults and children of both genders, regardless of the gender of the stimulus. Conclusions: In our study, we found that facial expression generates an impact on the perception that a subject has on the cuteness of the face. The faces that show happiness were scored as more cute compared to those that expressed anger, disgust, or sadness. We suggest that expression of positive emotions, like a smile, could increase the conducts associated with caring, placing the child in a more favorable situation for the future.