A new study has found that most three-year-old children can remember a lot of what happened to them a year earlier, and these memories are still clear while they are 5 and 6, but by the time they are over 7, these memories become weaker rapidly.
一项新的研究发现，大多数三岁的孩子都能记得很多一年前发生在他们身上的事情，在他们5岁到6岁的时候，这些记忆仍然清晰，但当他们超过7岁时，这些记忆就会迅速变弱。
Conclusion: The masticatory efficiency of 7~9 year-old children was negative correlated with caries status index, and filling of decayed teeth can significantly increase masticatory efficiency.
结论：7~9岁儿童咀嚼效能与患龋状况存在直线负相关关系，龋病充填治疗可显著增加患龋儿童的咀嚼效能。
Objective: to study the variations of parenting practices during children from 2 to 7 year-old and its relation to childrens inhibition.
目的：考察父母教养行为在儿童2岁和7岁时的差异及其与儿童抑制性的关系。
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