B

　　[2015·河南郑州质量预测一]“A photograph that one has taken of oneself, typically with a smart phone or webcam and uploaded to a social media website” is the definition of “selfie” in the Oxford English Dictionary. In fact, it wasn't even in the dictionary until August of last year. It earned its place there because people are now so obsessed with (对……痴迷) selfies－we take them when we try on a new hat, play with our pets or when we meet a friend whom we haven't seen in a while.

　　But is there any scientific explanation for this obsession? Well, you should probably ask James Kilner, a neuroscientist (神经系统科学家) at University College London.

　　Through our lifetime we become experts at recognizing and interpreting other people's faces and facial expressions. In contrast， according to Kilner, we have a very poor understanding of our own faces since we have little experience of looking at them－we just feel them most of the time.

　　This has been proved in previous studies, according to the BBC.

　　Kilner found that most people chose the more attractive picture. This suggests that we tend to think of ourselves as better­looking than we actually are. To further test how we actually perceive our own faces, Kilner carried out another study. He showed people different versions of their own portrait－the original, one that had been edited to look less attractive and one that was made more attractive－and asked them to pick the version which they thought looked most like them. They chose the more attractive version.

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