Social closeness of MZ and DZ twin parents towards nieces and nephews-Reference-Cited by-同舟云学术

Social closeness of MZ and DZ twin parents towards nieces and nephews

Published:2007-06 Issue:4 Volume:21 Page:487-506
ISSN:0890-2070
Container-title:European Journal of Personality
language:en
Short-container-title:Eur J Pers

Author:

Segal Nancy L.¹,Seghers James P.²,Marelich William D.¹,Mechanic Mindy B.¹,Castillo Ricardo R.¹

Affiliation:

1. Department of Psychology, California State University, Fullerton, CA, USA

2. Department of Psychology, Kent State University, Kent, OH, USA

Abstract

Twins' marriages to non‐twins yield genetically and socially informative kinships. Monozygotic (MZ) twins' genetic identity makes them ‘genetic parents’ of their nieces/nephews, and their nieces/nephews their ‘genetic children’. The present study is the first to apply twin‐family models to study social relatedness. Analyses of twin families (MZ: N = 248; DZ: N = 75) tested evolutionary‐based concepts concerning social closeness, perceived similarity and caretaking. Hypotheses based on Hamilton's inclusive fitness theory were supported: MZ twin aunts/uncles expressed greater social closeness towards their nieces/nephews than DZ twin aunts/uncles; and female twins from same‐sex pairs expressed greater closeness towards their nieces/nephews than male twins from same‐sex pairs. This study underlines benefits of associations between behavioural‐genetic and evolutionary psychological theories, methods and interpretations. Copyright © 2007 John Wiley & Sons, Ltd.

Publisher

SAGE Publications

Subject

Social Psychology

Link

http://journals.sagepub.com/doi/pdf/10.1002/per.620

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