Parental Employment and Child Cognitive Development
研究发现母亲在孩子出生后头三年就业，对3-4岁儿童语言能力有轻微负面影响，对5-6岁儿童阅读和数学成绩有更大负面影响，且比以往研究更悲观。
Abstract Maternal employment during the first three years of the child's life has a small deleterious effect on estimated verbal ability of three- and fouryear- olds and a larger negative impact on reading and mathematics achievement of five- and six-year-olds. This study provides a more pessimistic assessment than most prior research for two reasons. First, previous analyses often control crudely for differences in child and household characteristics. Second, the negative relationships are more pronounced for the reading and mathematics performance of five- and six-year-old children than for the verbal scores of three- and four-year-olds.