How Much is Too Much? The Influence of Preschool Centers on Children's Social and Cognitive Development
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Previous research has demonstrated that attending center care is associated with cognitive benefits for young children. However, little is known about the ideal age for children to enter such care or the "right" amount of time, both weekly and yearly, for children to attend center programs. Using
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美国国家经济研究局创建时间：
2005-12-01
