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Author: Xu Yan, Hope
Resulting in 2 citations.
1. Yu, Wei-hsin
Xu Yan, Hope
Effects of Siblings on Cognitive and Sociobehavioral Development: Ongoing Debates and New Theoretical Insights
American Sociological Review 88,6 (November 2023).
Also: https://doi.org/10.1177/00031224231210258
Cohort(s): Children of the NLSY79, NLSY79, NLSY79 Young Adult
Publisher: American Sociological Association
Keyword(s): Behavioral Development; Behavioral Problems; Cognitive Ability; Cognitive Development; Family Characteristics; Family Dynamics; Family Environment; Family Resources; Family Size; Sibling Birth Order; Siblings; Sociobehavioral Development

Permission to reprint the abstract has not been received from the publisher.

Despite social scientists’ long-standing interest in the influences of siblings, previous research has not settled the debates on how relevant sibship size is to child development and whether growing up with more siblings could be beneficial. Using 30 years of longitudinal data and fixed-effects models, this study offers the most comprehensive evidence on how sibship size is tied to cognitive and sociobehavioral development. We also advance the literature by systematically comparing the consequences of gaining a sibling for children with varying ordinal positions. Contrary to prior studies using selective data from limited observation spans, we find that children experience net decreases in cognitive test scores as their family size grows. At the same time, our analysis shows that sibling additions are only important to first- and second-born children’s—not later-born children’s—cognitive development. Even for the first- and second-born, the marginal effect of adding a sibling lessens with each addition. Our results thus demonstrate the time-dependent nature of family resource-dilution processes. For sociobehavioral development, the evidence indicates that having an older sibling is beneficial, but gaining a younger sibling increases behavioral problems for some (e.g., first-born children). Because more children from large families have older siblings, children from larger families exhibit less problematic behavior, on average. By uncovering the complex relationship between siblings and noncognitive development, this study also generally contributes to the sociology of family and inequality.
Bibliography Citation
Yu, Wei-hsin and Hope Xu Yan. "Effects of Siblings on Cognitive and Sociobehavioral Development: Ongoing Debates and New Theoretical Insights." American Sociological Review 88,6 (November 2023).
2. Yu, Wei-hsin
Xu Yan, Hope
Maternal Age, Early Childhood Temperament, and Youth Outcomes
Demography published online (26 October 2022): DOI: 10.1215/00703370-10293348.
Also: https://read.dukeupress.edu/demography/article/doi/10.1215/00703370-10293348/319572/Maternal-Age-Early-Childhood-Temperament-and-Youth
Cohort(s): Children of the NLSY79, NLSY79, NLSY79 Young Adult
Publisher: Population Association of America
Keyword(s): Age at Birth; Educational Attainment; Health, Mental/Psychological; Mothers; Temperament

Permission to reprint the abstract has not been received from the publisher.

Demographers and family researchers have long debated whether early childbearing has negative consequences on the offspring, but few have considered that the benefits of delayed childbearing (or the lack thereof) may not be universal. Using sibling data from the National Longitudinal Survey of Youth 1979 Children and Young Adults, we investigate how the relevance of mothers' age at childbirth to youth outcomes (academic performance, years of education completed, and psychological distress) may differ for youth whose early-childhood behavioral disposition (i.e., temperament) indicated varying degrees of insecure attachment. Results from family fixed-effects models, which take into account much of the unobserved heterogeneity among families, show that having an older mother is associated with improved educational and psychological outcomes for youth with a rather insecure early temperament. In contrast, mothers' age at childbirth hardly matters for children with a secure disposition. Further analysis indicates that the moderating effect of maternal age cannot be explained by the mother's first-birth timing, education, work status, income, or family stability. Older mothers' higher likelihood of prior child-rearing experience explains part of the older-mother advantage for temperamentally insecure children. However, the aging process, which equips older mothers with enhanced maturity, more calmness, and therefore greater capacity to overcome adversities, seems to account for the smaller detrimental effects of an insecure disposition on their children.
Bibliography Citation
Yu, Wei-hsin and Hope Xu Yan. "Maternal Age, Early Childhood Temperament, and Youth Outcomes." Demography published online (26 October 2022): DOI: 10.1215/00703370-10293348.