Children receive more care and resources from their maternal grandmothers than from their
paternal grandmothers. This asymmetry is the “matrilateral bias” in grandmaternal …

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 …

Maternal grandmothers invest more in childcare than paternal grandmothers. This bias is
large where the expression of preferences is unconstrained by residential and lineage …

Abstract Das Zusammenleben der Menschen entwickelte sich weniger durch natürliche
Selektion als durch kulturelles Lernen und verstehende Kooperation. Wie wir die …

Despite recent exciting research about pair bonding, little is known about how mammalian
vocalizations change with the initiation and maintenance of pair bonding in monogamous …

Reproductive success is associated with age in many taxa, increasing in early life followed
by reproductive senescence. In socially monogamous but genetically polygamous species …

Within socially monogamous breeding systems, levels of extra-pair paternity can vary not
only between species, populations, and individuals, but also across time. Uncovering how …

The question of why females engage in extra-pair behaviors is long-standing in evolutionary
biology. One suggestion is that these behaviors are maintained through pleiotropic effects …

Extra‐pair paternity (EPP) is often linked to male age in socially monogamous vertebrates;
that is, older males are more likely to gain EPP and less likely to be cuckolded. However …

Exogenous shocks during sensitive periods of development can have long-lasting effects on
adult phenotypes including behavior, survival and reproduction. Cooperative breeding, such …