ArticleJournal of biosocial science2013
Testing evolutionary theories of discriminative grandparental investment.
Article in Journal of biosocial science, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Offspring fertility and grandchild survival enhanced by maternal grandmothers in a pre-industrial human society.Scientific reports · 2021Article
- Anticipated (Grand-)Parental Childcare Support and the Decision to Become a Parent.European journal of population = Revue europeenne de demographie · 2018Article
- Grandmothers and Children's Schooling in Sub-Saharan Africa.Human nature (Hawthorne, N.Y.) · 2018Article
- A model explaining the matrilateral bias in alloparental investment.Proceedings of the National Academy of Sciences of the United States of America · 2017Article
- Do Step- and Biological Grandparents Show Differences in Investment and Emotional Closeness With Their Grandchildren?Evolutionary psychology : an international journal of evolutionary approaches to psychology and behavior · 2017Article
- Grandparental effects on fertility vary by lineage in the United Kingdom.Human nature (Hawthorne, N.Y.) · 2014Article
- Predictors of grandparental investment decisions in contemporary Europe: biological relatedness and beyond.PloS one · 2014Article
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study tests two evolutionary hypotheses on grandparental investments differentiated by the child's sex: the paternity uncertainty hypothesis and the Trivers-Willard hypothesis. Data are from two culturally different countries: the Dutch Longitudinal Aging Study Amsterdam (n=2375) and the Chinese Anhui Survey (n=4026). In the Netherlands, grandparental investments are biased towards daughters' children, which is in accordance with the paternity uncertainty hypothesis. But in China, grandparental investments are biased towards sons' children, which is in conflict with the paternity uncertainty hypothesis. This study found no support for the Trivers-Willard hypothesis. These results raise doubts over the relevance of paternity uncertainty as an explanation of a grandparental investment bias towards daughters' children that is often found in Western populations. The results suggest that discriminative grandparental investments are better understood as the outcome of cultural prescriptions and economic motives.
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