Back to Search
Start Over
Social closeness and gift giving by twin parents toward nieces and nephews: An update
- Source :
-
Personality & Individual Differences . Jan2011, Vol. 50 Issue 1, p101-105. 5p. - Publication Year :
- 2011
-
Abstract
- Abstract: Twin-family designs yield an array of genetically related individuals, conducive to testing evolutionary-based hypotheses regarding social closeness. Monozygotic twins’ genetic identity makes them the “genetic parents” of their nieces/nephews. However, dizygotic twins retain customary aunt/uncle relationships with their co-twin’s children. A 2007 study found that MZ twin aunts/uncles expressed greater social closeness toward nieces/nephews than DZ twin aunts/uncles, consistent with predictions from inclusive fitness theory. Greater social closeness was expressed toward children of female co-twins than male co-twins. These issues and others were revisited in a larger sample of 419 twins. The new results parallel those from the initial study. In addition, twins with female co-twins gave more gifts to nieces/nephews than did twins with male co-twins; however, the effect of zygosity was non-significant. The value of assessing evolutionary psychological questions via behavioral-genetic methods is emphasized. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01918869
- Volume :
- 50
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Personality & Individual Differences
- Publication Type :
- Academic Journal
- Accession number :
- 54481521
- Full Text :
- https://doi.org/10.1016/j.paid.2010.09.009