Birth order and adult family relationships: Firstborns have better sibling relationships than laterborns

Pollet, Thomas and Nettle, Daniel (2009) Birth order and adult family relationships: Firstborns have better sibling relationships than laterborns. Journal of Social and Personal Relationships, 26 (8). pp. 1029-1046. ISSN 0265-4075

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Official URL: https://doi.org/10.1177/0265407509347940

Abstract

Although middleborn college students commonly report worse family relationships than other birth orders, it is unknown whether this effect persists into adulthood. Therefore, we investigated the effect of birth order on self-reported family and friend relationships among a large sample of Dutch adults (n = 794). Middleborns did not differ from other birth orders in relationships with their father, mother, sibling or close friend. Middleborns do not prefer a friend over their father, mother or sibling more than other birth orders. Evidence for a “neglected middleborn effect” appeared only in a within-family design for siblings. Firstborns were more likely to report very good sibling relationships and preferred a sibling over a friend. The results are discussed in terms of kin competition and inclusive fitness.

Item Type: Article
Uncontrolled Keywords: birth order, family relationships, kin selection theory, relationship quality, reproductive value, siblings
Subjects: C800 Psychology
Department: Faculties > Health and Life Sciences > Psychology
Depositing User: Becky Skoyles
Date Deposited: 26 Sep 2017 10:47
Last Modified: 24 Oct 2017 11:34
URI: http://nrl.northumbria.ac.uk/id/eprint/32051

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