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hunter-horticulturalists, adolescent girls would have a positive impact on the growth and development of younger siblings. We measured height, weight, and skinfold thicknesses of 72 children and young adults, and computed body mass indices (BMI). Contrary to predictions, adolescent girls had a strong

Die ZBW räumt Ihnen als Nutzerin/Nutzer das unentgeltliche, räumlich unbeschränkte und zeitlich auf die Dauer des Schutzrechts beschränkte einfache Recht ein, das ausgewählte Werk im Rahmen der unter

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First evidence of sex differences in the duration of avian embryonic period: consequences for

*The author thanks Debby Carr, the editor, and the three reviewers for helpful and insightful suggestions. The study was supported by a grant from the National Institute on Aging (P01 AG21079-01). The Wisconsin Longitudinal Study (WLS) has its principal support from the

Nearly all economic models of the household have implications for how characteristics of the children in a family affect human capital investments in their siblings. Much evidence suggests that perceived returns to investing in sons is higher than investing in daughters in many economies (often due

Background: A family case report of cleidocranial dysplasia (CCD) with varied manifestations from father to three siblings is presented. CCD ( MIM # 119600) is a rare autosomal dominant skeletal dysplasia caused by CBAF1 gene ( OMIM 600211) with a wide range of variability. In all the cases

(Studies 1 and 2) and reported having more siblings, especially sisters (Study 3). Finally, the prevalence of prosocials increased—and the prevalence of individualists and competitors decreased—from early adulthood to middle adulthood and old age (Study 4). Traditional theories and insights assume

Abstract Background : Parents are often concerned about repeated confl icts between their daughters and sons. However, there is little empirical research of sibling bullying. Objective : To conduct a review of existing studies of sibling bullying. Are there any associations between sibling