科学美国人60秒:婴儿展现社会性微笑-托福听力下载

　　科学美国人60秒中文翻译：

　　Ever try to get a baby to smile? 你有没有曾经尝试过逗乐一个小婴儿?

　　It can seem close to impossible—and then suddenly there it is: 这看起来几乎是不可能完成的任务—但突然婴儿就笑了：

　　that elusive, seemingly joyous grin. 而且是难以捉摸、看起来欢乐的咧嘴而笑。

　　Well it turns out those smiles aren't spontaneous—they're strategic. 然而结果表明这些笑容不是真心而发—而是小婴儿耍的小伎俩。

　　Researchers have found that when babies smile, it's for a reason. 研究人员发现婴儿的笑是有其中原因的。

　　They want whoever they're interacting with—typically a parent—to smile back. 他们希望对尤其是父母在内，同自己互动的人微笑。

　　And they time it just so, a smile here and a smile there. 而且婴儿们还会掐准时间，一会儿在这里笑，一会儿又在那里笑。

　　The researchers call it sophisticated timing. 研究人员将它成为精准时间。

　　The study is in the journal PLoS ONE. 这项研究已经在《PLoS ONE》杂志上发表。

　　The researchers enlisted real mothers and infants and quantified their interactions, which fell into four categories. 研究人员对一些真实血缘关系的母亲及婴儿进行了研究，而且对他们之间的互动进行了量化，并分为下面4类。

　　One: babies wanted to maximize the amount of time smiling at their mothers. 一：婴儿想要对母亲微笑最多。

　　Two: they wanted to maximize the time the mothers smiled at them. 二：婴儿想要母亲对自己微笑最多。

　　Three: they wanted to experience simultaneous smiling, 三：婴儿想要和他们的母亲同时微笑。

　　and four: no smiling at all. 还有第四点：婴儿们根本就不笑。

　　By studying when smiles happened and what the subsequent effect was, the investigators were able to figure out that for mothers the goal 70 percent of the time was to be smiling simultaneously 研究人员通过研究微笑的时间及其后续的反应得出结论，对于妈妈们而言，70%的时间都是同时微笑，

　　while for babies 80 percent of the time they just wanted their mother smiling at them. 而婴儿们80%的时间则是希望妈妈对自己微笑。

　　So, mothers want the interaction, while babies just want to be smiled at. 因此妈妈们希望互动，但婴儿只是希望得到妈妈的笑容。

　　So your baby may not be able to feed itself, talk or even turn over yet. 因此你的宝贝可能还不会自己吃饭、讲话或翻身。

　　But when it comes to smiles, babies seem to know exactly what they're up to. 但在一展笑颜的时候，婴儿们似乎非常能够胜任。

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