Earlier today, Jo Cox was shot and stabbed multiple times by a lone assailant in Birstall, West Yorkshire. Ms. Cox (Helen Joanne "Jo" Cox), was a Member of Parliament (MP) and she had been holding a surgery in Birstall with her constituents. She died approximately an hour later.
Multiple news media sources are reporting that Clarke Rothwell, a man who runs a cafe near the murder scene, said the assailant "was shouting 'put Britain first.' He shouted it about two or three times. He said it before he shot her and after he shot her." Jo Cox was against the Brexit movement.
The image above shows Jo Cox with a sincere smile. From a nonverbal communications perspective, many people are surprised to discover that a sincere smile need not show any teeth.
Note that Ms. Cox's eyes (eyelids) are partially closed - which is always required in the context of a sincere smile (Duchenne Smile). Notice too that with each of her lower eyelids there are temporary, concave-up furrows - also a necessary component in order for a smile to be a sincere one. Additionally, Jo's forehead is relaxed - another requisite for a sincerity smile.
Her cheek muscles are vectored upwards along with the corners of her mouth. The minority of people have "dimples" when they smile. While dimples are considered my most people to be a sign of beauty - it is fascinating to note that with people who are capable of displaying dimples, these either not present or at least are much less defined when that same person is faking a smile (In contrast to the above example where we see yet another sign of sincerity). From an evolutionary biology and psychology point-of-view, it makes perfect sense that we should, as human beings, be attracted to this "beauty sign" - when it's true pull springs from an attraction to sincerity.
Yet there are no teeth showing.
A true smile of joy-happiness need not display any teeth. And while it's accurate to say that here, her mouth's component of this smile is not being fully expressed, it is indeed a sincere one. Such partially suppressed smiles often are accompanied by blushing (also seen above). Indeed suppressing a smile will frequently engender blushing. While blushing is NOT a requirement for a smile to be sincere - when it IS present such blushing is a strong confirmation of sincerity.
Of course teeth are more commonly exposed during true smiles, but in such cases only the upper teeth are seen (with the exceptions of crescendoing into or decrescendoing from sincere laughter [where the lower teeth ARE seen] or via a higher camera/visual angle).
My deepest condolences to the family and friends of Jo Cox.
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