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  3. Given all the roiling debates about how America’s children should be taught, it may come as a surprise to learn that students sp

Given all the roiling debates about how America’s children should be taught, it may come as a surprise to learn that students sp

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问题    Given all the roiling debates about how America’s children should be taught, it may come as a surprise to learn that students spend less than 15% of their time in school. While there’s no doubt that school is important, a clutch of recent studies reminds us that parents are even more so. A study published earlier this month by researchers at North Carolina State University, Brigham Young University and the University of California-Irvine, for example, finds that parental involvement—checking homework, attending school meetings and events, discussing school activities at home—has a more powerful influence on students’ academic performance than anything about the school the students attend. Another study, published in the Review of Economics and Statistics, reports that the effort put forth by parents has a bigger impact on their children’s educational achievement than the effort expended by either teachers or the students themselves.
   So parents matter—a point made clear by decades of research showing that a major part of the academic advantage held by children from affluent families comes from the "concerted cultivation of children" as compared to the more laissez-faire style of parenting common in working-class families. But this research also reveals something else: that parents, of all backgrounds, don’t need to buy expensive educational toys or digital devices for their kids in order to give them an edge. They don’t need to drive their offspring to enrichment classes or test-prep courses. What they need to do with their children is much simpler: talk.
   But not just any talk. Although well-known research by psychologists Betty Hart and Todd Risley has shown that professional parents talk more to their children than less-affluent parents—a lot more, resulting in a 30 million "word gap" by the time children reach age three—more recent research is refining our sense of exactly what kinds of talk at home foster children’s success at school. For example, a study conducted by researchers at the UCLA School of Public Health and published in the journal Pediatrics found that two-way adult-child conversations were six times as powerful in promoting language development as conditions in which the adult did all the talking. Engaging in this reciprocal back-and-forth gives children a chance to try out language for themselves, and also gives them the sense that their thoughts and opinions matter.
   The content of parents’ conversations with kids matters, too. Children who hear talk about counting and numbers at home start school with much more extensive mathematical knowledge. Psychologist Susan Levine, who led the study on number words, has found that the amount of talk young children hear about the spacial properties of the physical world—how big or small or round or sharp objects are—predicts kids’ problem-solving abilities as they prepare to enter kindergarten.
   While the conversations parents have with their children change as kids grow older, the effect of these exchanges on academic achievement remains strong. And again, the way mothers and fathers talk to their middle-school students makes a difference. Research by Nancy Hill, a professor at Harvard University’s Graduate School of Education, finds that parents play an important role in what Hill calls "academic socialization"—setting expectations and making connections between current behavior and future goals (going to college, getting a good job). Engaging in these sorts of conversations, Hill reports, has a greater impact on educational accomplishment than volunteering at a child’s school or going to PTA (parent-teacher association) meetings, or even taking children to libraries and museums.
   [A] published a study revealing that reciprocal adult-child conversations are better for language development.
   [B] reports that chatting with children is much better than taking them to libraries and museums.
   [C] indicates that parents are crucial in what is called "academic socialization."
   [D] indicates children’s problem-solving abilities have something to do with their spacial concepts.
   [E] shows that parents are more influential on children’s academic achievement than teachers are.
   [F] co-authored a study showing that professional people’s kids will master 30m words by their 3.
   [G] co-authored a study showing that professional parents converse more with their kids than less wealthy parents.
Pediatrics
选项
答案A
解析 Pediatrics出现在第三段的第三句。该句提到，在Pediatrics上发表的一项研究发现，成年人与孩子双向交谈促进语言发展的力度是成年人单方讲话情形下的6倍。亦即成人与孩子间的双向交流更有利于语言发展，A项所述与之相符，其中reciprocal与原文的two-way同义，better则对应文中的six times as powerful，故确定A为正确答案。
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