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Although sociologists have identifiedfactors associated with the timing of births, little is known about the consequences of the spacing of births. Several perspectives imply a negative effect of close spacing of siblings on educational attainment, but these perspectives differ in the mechanisms used to explain this effect. We use data from the High School and Beyond survey to investigate the effect of spacing on high school attrition and post-secondary school attendance. Our analysis confirms that close spacing increases the likelihood of dropping out of high school and decreases the odds of attending post-secondary school. The direct effect of close spacing on post-secondary school attendance persists net of ability and academic performance; the effect of spacing on dropping out of high school is mixed. Close spacing of siblings also constrains the allocation offamily resources, which in turn affects educational attainment. Alternative explanations of the relationship between sibship structure and educational outcomes are reinterpreted in light of these findings.
Powell et al. (Tue,) studied this question.