Men have the capacity to respond to the transition to fatherhood and nurturant investments
in their partners and children with shifts in neuroendocrine function (such as decreased …

Owing to humans' unique life history pattern, particularly comparatively short interbirth
intervals, early weaning, and prolonged support of multiple dependents, human females …

Early life cues of environmental harshness and unpredictability have been hypothesized to
influence within-species variation in the timing of life history transitions and the dynamics of …

We've all heard that a father's involvement enriches the lives of children. But how much have
we heard about how having a child affects a father's life? As Peter Gray and Kermyt …

To expand our understanding of the neuroendocrine mechanisms underlying human
fatherhood, including its cross-cultural expression, we investigated the hormonal correlates …

Unlike most mammals, human fathers cooperate with mothers to care for young to an
extraordinary degree. Human paternal care likely evolved alongside our unique life history …

This paper investigates relationships between men's testosterone and family life in a sample
of approximately 350 Jamaican fathers of children 18–24 months of age. The study …

Natural selection favors the evolution of mechanisms that optimize the allocation of
resources and time among competing traits. Hormones mediate developmental plasticity …

Past paternal psychobiology research has focused almost exclusively on biological,
residential fathers and the role of fathers as direct caregivers. Here, drawing on a large …

Middle childhood—conventionally going from about 6–11 years of age—is a crucial yet
underappreciated phase of human development. On the surface, middle childhood may …