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  3. Kids whose moms were employed outside the home, a new study found, were more likely to have been hospitalized, had an asthma(哮喘)

Kids whose moms were employed outside the home, a new study found, were more likely to have been hospitalized, had an asthma(哮喘)

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问题     Kids whose moms were employed outside the home, a new study found, were more likely to have been hospitalized, had an asthma(哮喘)attack or an injury or ingested something poisonous in the last year than kids whose moms weren’t working. Not just a little more likely—twice as likely.
    The findings, soon to be published in the Journal of Health Economics, contradict other research that has found the opposite: that working moms have healthier kids(Which contradicts other research, and so on...). The discrepancy is due to the way the researcher Melinda Sandler Morrill, an assistant professor of economics at North Carolina State University, sliced and diced the available data.
    Morrill looked at the health only of kids aged 7 to 17 who had a younger sibling of about kindergarten age, so that their moms were likely to be right on the cusp(尖端)of changing their working status. She also used other difficult-to-explain statistical techniques to try to make sure that the results she was seeing were due only to the fact that the mom was working, rather than anything else. If the same mother had not been working, what would the kids’ health have looked like?
    For example, she wanted to make sure that the mothers weren’t staying home because their children were frail, which would not skew(影响)the results. Also she wanted to make sure that the figures weren’t comparing a mother who was not good at multitasking with a mother who was.
    While the headline-friendly finding could produce handwringing among working moms and a quiet smile among those whose primary job is mothering, that’s not the intended result. "I’m not trying to make a statement," says Morrill. Rather, she’s striving for a more accurate picture than the current analyses can supply. "The study provides one more piece of evidence about what happens to children when mothers work. "
    It doesn’t seem all that surprising that school-kids whose mothers work suffer more health incidents of the kinds she suggests. Injuries, poisonings, asthma attacks would logically seem more likely to happen to children who are not being minutely supervised than to those who are.
    Morrill, who declined to say whether she had kids, acknowledges that this is a possible explanation. But she was quick to add that she couldn’t say where the kids in the study were when the incidents happened—with parents, grandparents or a nanny or at day care. And the study had no information about the long-term well-being of kids with moms in paid employment.
Why is the result of Melinda Sandler Morrill’s study different from that of other studies?
选项 A、Because she studied the health only of kids aged 7 to 17.
B、Because she studied from the perspective of economics.
C、Because she processed the available data in a different way.
D、Because she selected her research target at random.
答案C
解析 细节辨认题。由定位段第二句可知，Morrill的研究结果与其他研究的结果不同主要是由于她的数据处理方式，因此答案为C)。A)“因为她只研究了7至17岁的孩子的健康状况”，文中指出她选择的研究对象年龄在7至17岁并且有一个幼儿园学龄的弟弟或妹妹，A)表述不完整，故排除；B)“因为她从经济学的角度研究”，这并非她的研究结果与其他研究的结果不同的原因，故排除；D)“因为她随机选择研究对象”，不符合文中关于研究对象范围的描述，故排除。
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