Lineage based differences in grandparental investment: evidence from a large British cohort study.

@article{Pollet2009LineageBD,
  title={Lineage based differences in grandparental investment: evidence from a large British cohort study.},
  author={Thomas V. Pollet and Mark Nelissen and Daniel Nettle},
  journal={Journal of biosocial science},
  year={2009},
  volume={41 3},
  pages={355-79}
}
Evolutionary theory suggests that maternal grandparents will invest more in their grandchildren than paternal grandparents, due to the difference between the certainty of maternity and the uncertainty of paternity. Most tests of this prediction have tended to use retrospective ratings by grandchildren rather than examining grandparental behaviour. Using a large-scale data set from the UK (n>7000), significant differences are shown between maternal and paternal grandparents in terms of… CONTINUE READING

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