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  • Stratification scholars predominantly investigate how differences among children from different families emerge and tend to neglect differences among children from the same family. I study sibling similarity in cognitive ability and examine whether their similarity varies by parents' education. Although economic approaches and their extensions argue that disadvantaged parents reinforce differences while advantaged parents compensate for differences, I argue that parents may also make equal investments and thus accept differences among their children. I refer to the literature on stratified parenting that demonstrates that parents are engaged differently in child-rearing and their children’s skill formation processes. Because advantaged parents foster children’s talents more individually compared with disadvantaged parents, I propose that sibling similarity is lower in advantaged than in disadvantaged families. Previous studies based on sibling correlations provide conflicting evidence. To account for observable and unobservable differences among siblings, I extend the established sibling correlation approach and study dizygotic and monozygotic twins in addition to siblings. The analyses draw on novel data from a population register-based study of twin families. I find that young adult siblings and twins are less alike in cognitive ability in highly educated families than in less educated families. Hence, my results support the hypothesis concerning equal investments and indicate that stratified parenting has a long-lasting influence on children’s cognitive ability. (xsd:string)
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?:dateModified
  • 2019 (xsd:gyear)
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  • 2019 (xsd:gyear)
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  • 10.3224/zff.v31i1.04 ()
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  • en (xsd:string)
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  • 1437-2940 ()
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  • 1 (xsd:string)
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  • Does sibling and twin similarity in cognitive ability differ by parents' education? (xsd:string)
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  • Zeitschriftenartikel (xsd:string)
  • journal_article (en)
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  • GESIS-SSOAR (xsd:string)
  • In: Zeitschrift für Familienforschung, 31, 2019, 1, 58-82 (xsd:string)
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?:urn
  • urn:nbn:de:0168-ssoar-62208-4 ()
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  • 31 (xsd:string)