Give us a smile Women smile more often and men frown more often, but this could be due to cultural expectations, suggests research. The study, A large-scale analysis of sex differences in facial expressions, published in PLOS One, builds on prior evidence suggesting women smile more often than men, but considers a greater variety of facial expressions, revealing complex gender patterns. The US researchers used new automated facial coding technology to analyse the expressions of 2,106 people from France, Germany, China, the US and the UK as they watched video adverts. In addition to smiling more than the men, the […]

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