Recently, a study revealed that parents should really limit the amount of screen time that their children have to just two hours a day, especially since an increasing body of research suggests that all that eye strain is causing a disturbing rise in nearsightedness in both kids and adults. Now, a new study published in the journal Social Science Research states that, if you want to have a sharp kid, the best thing you can do is not only encourage them to read real books, but also keep a fair number of them around the house.

最近，一项研究揭示：家长应限制孩子看屏幕的时间，每天最多看俩小时，特别是因为越来越多的研究表明：眼睛疲劳会导致宝宝和成年人都近视。现在，《社会科学研究》（Social Science Research）期刊上发表的一项新研究指出，若想培养聪明宝宝，不仅要让他/她多读书，而且家中也要多备些书。

Researchers asked 160,000 adults, from 31 different countries, who took part in the Programme for the International Assessment of Adult Competencies between 2011 and 2017, how many books were present in their homes when they were growing up. They then compared these responses to the results of a series of tests the participants took to measure their literacy, numeracy, and information communication technology (ICT) skills.

来自31个不同国家的16万成年人参加了成人能力国际评估计划（2011至2017年），研究员请这些成年人回答了这样一个问题：在成长过程中，你家里面有多少书？之后，研究员将受试者的回答与他们所进行的一系列测试结果进行对比，以评估他们在识字、算术和信息通信技术方面的技能。

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