Grandparents are often a key source of care provision for their grandchildren, yet they are
sidelined in caregiving research and policy decisions. We conducted a global, systematic …

This book offers a synthesis of social science and evolutionary approaches to the study of
intergenerational relations, using biological, psychological and sociological factors to …

Help is directed towards kin in many cooperative species, but its nature and intensity can
vary by context. Humans are one of few species in which grandmothers invest in …

An estimated 12 million girls aged 15–19 years, and 777,000 girls younger than 15 give
birth globally each year. Contexts of war and displacement increase the likelihood of early …

Non-maternal carers (allomothers) are hypothesized to lighten the mother's workload,
allowing for the specialized human life history including relatively short interbirth intervals …

Introduction Early childhood interventions primarily focus on the mother–child relationship,
but grandmothers are often critical in childcare in low-resource settings. Prior research is …

Objectives Evolution of human maternal investment strategies is hypothesized to be tied to
biological constraints and environmental cues. It is likely, however, that the socioecological …

Intergenerational families play an important role in providing informal care and support.
However, how the intergenerational living arrangements shape the time allocation of young …

Despite the tendency of some academic disciplines to assume that the nuclear family is
normative, the family takes a number of different forms cross-culturally. Regardless of family …

In humans, high levels of investment are required to raise offspring, because of the
prolonged developmental period and short interbirth intervals. The costs borne by individual …