In order to study the hormonal correlates of the tradeoff between mating and parenting effort
in human males, we examined the salivary testosterone (T) levels of 58 Boston-area men …

Study of the development of the infant from birth through key cognitive, intellectual and
emotional milestones has revealed a series of enmeshed and complex processes (Bergman …

For female mammals, caring for young until weaning or even longer is an extension of the
reproductive burden that begins at insemination. Given the high price females potentially …

This second edition reviews the new research findings and theoretical advances on fathers,
families, child development, programs, and policies that have occurred in the past decade …

In a minority of mammalian species, including humans, fathers play a significant role in
infant care. Compared to maternal behavior, the neural and hormonal bases of paternal care …

Nowadays, the functions and roles of the father are the consequence of a gradual transition
from a patriarchal family to a contemporary family organization. New fathers today are …

The organization and activation of maternal care are known to be highly regulated by
hormones and there is growing evidence that expression of paternal care is also related to …

Maternal behavior (MB) in mammals is a goal-directed behavior adapted for ensuring the
survival of a female's offspring. It includes a constellation of specific motor patterns that are …

Recent research points to decreasing testosterone (T) levels as well as decreasing
relationship quality during the transition to fatherhood, and it has been suggested that T …

Parental care is critical for successful reproduction in mammals. Recent work has implicated
the hormone prolactin in regulating male parental behavior, similar to its established role in …