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Researchers are increasingly interested in manipulating the environment early in children’s lives when they are perceived to be
Researchers are increasingly interested in manipulating the environment early in children’s lives when they are perceived to be
admin
2011-03-14
24
问题
Researchers are increasingly interested in manipulating the environment early in children’s lives when they are perceived to be at risk for impoverished intelligence. In a program conducted in North Carolina by Craig Ramey and his associates, pregnant women with IQs averaging 80 were recruited for a study. After their babies were born,half of the infants were cared for during the day at an educational daycare center and half were reared at home by their mothers; both groups of children were given medical care and dietary supplements, and their families were given social services if they requested them.
At the age of 3, the children who attended the educational daycare center had significantly higher IQs than did the home-reared children. This difference was likely due to the decline in the IQs of the home-reared children during the period from 12 to 18 months of age. By the time the children were 5 years old, 39 percent of the home-reared children had IQs below 85 but only 11 percent of the educational day-care children had IQs this low. In the most recent evaluation of this project, positive effects of educational daycare on the intellectual development and academic achievement of the children were evident at age 12.
Some parents, such as those in Ramey’s study, have difficulty providing an adequate environment for the intellectual needs of their infants. Once these difficulties are a reoccurring part of the family system, changing efforts probably will be more difficult and costly; early intervention in the family system is directed at changing parental adaptive and responsive functioning so that permanent negative effects are minimized.
In another investigation, the Infant Health and Development Program, early intervention with low-birth weight children revealed that both home visitation and an educational child curriculum improved the children’s IQ, decreased behavior problems, and improved the home environment. The intervention was more effective with mothers with low educational attainment than those with high educational attainment, more effective for African American than White children, and effective for most at-risk children.
Intervention programs have the most positive effects on children’s well-being when they (a) begin as early as possible, (b) provide services to parents as well as to the child, (c) have a low child-teacher ratio, (d) have high parental involvement, and (e) have frequent contacts. In one review of family intervention studies, intervention was more effective when there were eleven or more contacts between the intervener and the family; while eleven sessions is a somewhat arbitrary number, it does indicate that a certain duration of contact is necessary for intervention success.
It is implied in the passage that the babies at the daycare center
选项
A、were given more medical care than those at home.
B、were born of mothers with higher IQs.
C、were reared under a more favorable environment.
D、were more closely attended to by their mothers.
答案
C
解析
推论题。文章第二段指出,孩子三岁时,那些接受教育日托中心照料的孩子的智商明显高于在家中照料的孩子;到孩子五岁时,在家里抚养的孩子中,39%的智商低于85,而在教育日托中心接受护理的孩子中,只有11%的智商低于85。这说明,日托中心的孩子受抚养的环境更好。这与C项的意思相符。文章第一段最后一句话说“两组婴儿都得到医疗服务和饮食供给,如果需要的话,他们的家庭可以得到社会的帮助”,这里并没有说哪种婴儿得到的医疗护理多,所以A不对;文中没有提到B、D。
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