The bulk of attachment literature in the past 30 years focuses on the mother-infant
relationship and the behaviors that contribute to secure/insecure attachment. This study …

Research on the associations between hormones and human partnering represents an
exciting advance in understanding human behavior, relationships, and sexuality. We review …

In the 5–10% of mammals in which both parents routinely provide infant care, fathers as well
as mothers undergo systematic endocrine changes as they transition into parenthood …

This longitudinal study examined whether prenatal family alliance and prenatal paternal
testosterone levels predicted infant–mother and infant–father attachment security and …

Paternal care is often used interchangeably with “paternal investment,” though the two are
not synonymous and their definitions differ across disciplines. Direct paternal care best …

Objective A substantial body of research has investigated the effects of early family
environments on sexual maturity and behavior, focusing mostly on effects on females. The …

Mammalian fatherhood involves a muted version of the maternal experience. In spite of
previous assumptions to the contrary, hormones influence mammalian paternal behavior …

The association between marital status and health among men has been well documented,
but few studies track health trajectories following family structure transitions among …

In order to investigate the association between early life conditions and reproductive and
sexuality-related life history outcomes among men, we conducted a meta-analysis that …

Paternal investment theory and psychosocial acceleration theory hold that father absence
and stressful experiences, respectively, accelerate reproductive development. Accumulating …