Many social groups are made up of complex social networks in which each individual tends to associate with a distinct subset of its groupmates. If social groups increase [...]

Primate offspring often depend on their mothers well beyond the age of weaning and offspring that experience maternal death in early life can suffer substantial reduction[...]

Causal mediation analysis studies how the treatment effect of an exposure on outcomes is mediated through intermediate variables. Although many applications involve longi[...]

Adverse conditions in early life can have profound negative consequences for adult health and survival in humans and other animals. How does early adversity exert its inf[...]

Across taxa adverse early-life environments such as drought and psychosocial stress are associated with reduced growth and smaller body size in adulthood. However in wild[...]

In mammals glucocorticoids can be upregulated in response to both psychosocial and energetic stressors making it difficult to identify the major cause of elevated glucoco[...]

Age-related changes in fertility have increasingly been documented in wild animal populations: in many species the youngest and oldest reproducers are disadvantaged relat[...]

Opposite-sex social relationships are important predictors of fitness in many animals including several group-living mammals. Consequently understanding sources of varian[...]

Affiliative social behaviors are linked to fitness components in multiple species. However the role of genetic variance in shaping such behaviors remains largely unknown [...]

Inbreeding often imposes net fitness costs leading to the expectation that animals will engage in inbreeding avoidance when the costs of doing so are not prohibitive. How[...]