Why women love a man who smiles…
Researchers discovered that women who wanted a long-term relationship found men who smiled more attractive. The women also rated the men more trustworthy when they smiled than when they had a neutral expression. However, women looking for a short-term relationship did not find smiling men more appealing, the psychologists from the University of Oslo, and Senshu University in Japan said.
Men who seem more trustworthy are a more attractive option for a long-term partnership because it may involve parenting, the researchers said, but the character trait is less important for a short-term fling. ‘Smiling enhanced the male attractiveness for long-term relationships but not for short-term relationships,’ the researchers wrote in the journal Evolutionary Psychology.
These results are in agreement with the idea that social and cooperative characteristics would be primarily important for long-term partners but not very much for short-term partners because long-term cooperation is necessary for parenting in the former but not in the latter. Women put more emphasis on social factors such as trustworthiness for the long-term relationship, where paternal investment is expected, in order to minimise the risk of losing commitment from their partner during pregnancy and parenting.