TEENAGE AND ILLEGITIMATE BIRTH

在这个相互竞争的延续应用程序中，我们建议在我们的 以往对青少年因果关系的实证研究 在美国生育，开展了以下扩大和新的 具体目标：1.估计未能拖延的影响 生育对生理、认知、社会情感和 美国青少年妇女所生子女的行为发育状况 使用得到的稳健的、非参数的有界统计方法 从自然流产实验评价设计谈起 在这笔赠款的初始资助期开发的。2.展开 我们最初的研究计划是考虑失败的影响 推迟一组母亲的早产(更广泛地说， 父母)的结果，儿童发展文献认为是 对儿童发展的重要投入。3.扩展，并在一些 案例，用新的数据复制，我们对影响的初步分析 早期生育对母亲结局的影响，在不同阶段测量 青少年母亲的生命周期(即，处于不同年龄的女性 成为青少年母亲和我们对比组中女性的母亲)，使用 在我们最初的筹资期间制定了同样的评价设计。4. 进一步评估和测试我们自然流产的有效性- 用于确定因果关系的实验评估设计 十几岁的母亲未能推迟生育。我们的经验主义 分析将主要使用三个不同的数据源：(I) 全国青年纵向调查(NLSY79)；(2)数据集 组成全国母婴健康调查(NMIHS)； (3)美国生命统计数据的详细档案(活产) 数据，1968-94年。

In this competing continuation application, we propose to build on our previous empirical investigations of the causal effects of teenage childbearing in the U.S., undertaking the following expanded and new specific aims: 1. Estimate the effect of the failure to delay childbearing on the physiological, cognitive, socioemotional, and behavioral development of the children born to teenage women in the U.S. using the robust, non-parametric bounding statistical methods derived from the miscarriages-as-a-natural-experiment evaluation design developed in the initial funding period of this grant. 2. Expand on our initial research program to consider the effects of the failure to delay early childbearing on a set of maternal (and, more generally, parental) outcomes which the child development literature has argued are important inputs into the child's development. 3. Extend, and in some cases, replicate with new data, our initial analysis on the effects of early childbearing on maternal outcomes, measured at various stages of the teen mothers life cycles (i.e., at different ages of women who became teen mothers and of women in our comparison groups), using the same evaluation design developed during our initial funding period. 4. Further assess and test the validity of our miscarriages-as-a-natural- experiments evaluation design for identifying the causal effect of the failure of teen mothers to delay their childbearing. Our empirical analysis will make primary use of three different data sources: (i) the National Longitudinal Survey of Youth (NLSY79); (ii) data sets which comprise the National Maternal and Infant Health Survey (NMIHS); and (iii) Detailed Files of the U.S. Vital Statistics Natality (Live Birth) data, 1968-94.