Across human cultures, grandparents make a valued contribution to the health of their
families and communities. Moreover, evidence is gathering that grandparents have a …

Why do grandparents invest so heavily in their grandchildren and what impact does this
investment have on families? A multitude of factors influence the roles grandparents play in …

In the wake of the second demographic transition, changes in marriage and fertility
behaviour, in conjunction with the mortality revolution, have profoundly affected how family …

Evolutionary theory suggests that maternal grandparents will invest more in their
grandchildren than paternal grandparents, due to the difference between the certainty of …

Theories of kin selection and parental investment predict stronger investment in children and
grandchildren by women and maternal kin. Due to paternity uncertainty, parental and …

BACKGROUND Evolutionary theory predicts that grandparental investment should support
the childbearing of adult children, but evidence from contemporary developed countries is …

Evolutionary theory posits that grandparents can increase their inclusive fitness by investing
in their grandchildren. This study explored whether the transition to retirement affected the …

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 …

Differential grandparental investment in grandchildren is often explained with paternity
uncertainty. The asymmetric inheritance of the sex chromosomes, especially of the X …

Our project focuses on a previously neglected area of research: how does providing care for
grandchildren impact on the health and wellbeing of grandparents? Promoting the health …