Opportunities for conceiving and bearing children are fewer when unions are not formed or are dissolved during the childbearing years. At the same time, union instability produces a pool of persons who may enter new partnerships and have additional children in stepfamilies. The balance between these two opposing forces and their implications for fertility may depend on the timing of union forma...

Testing the trade-off between child quantity and quality within a family is complicated by the endogeneity of family size. Using data from the Chinese Population Census, we examine the effect of family size on child educational attainment in China. We find a negative correlation between family size and child outcome, even after we control for the birth order effect. We then instrument family si...

This paper shows how large family size can be an important contributor to household poverty. It presents results from recent research by the author using nationally representative household survey data that demonstrate clearly how large family size can contribute to poverty and vulnerability through its impact on household savings, labor supply, and parental earnings and education of children. ...

Although fertility is positively correlated across generations, the causal effect of children's experience with larger sibships on their own fertility in adulthood is poorly understood. With the sex composition of the two firstborn children as an instrumental variable, we estimate the effect of sibship size on adult fertility using high-quality data from Norwegian administrative registers. Our ...

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Three alternative procedures to adjust significance levels for multiplicity are the traditional Bonferroni technique, a sequential Bonferroni technique developed by Hochberg (1988), and a sequential approach for controlling the false discovery rate proposed by Benjamini and Hochberg (1995). These procedures are illustrated and compared using examples from the National Assessment of Educational ...

Self-perception of dental attractiveness is an important factor affecting orthodontic treatment need. The purpose of this study was to investigate the association between normative and self-perceived orthodontic treatment need and to evaluate the influence of gender and socioeconomic background such as family size, parental education and father's employment. The subjects were 900 male and femal...