Snapshot · Modern Wisdom
Darby Saxbe's lab found that new fathers of daughters show a larger drop in testosterone, spend less time caring for babies, and report more parenting stress and worse bonding than fathers of sons.
Where this was said
At 53:31 · chapter starts 53:19
In a paper her lab literally completed over the previous weekend, Saxbe reveals a striking and somewhat uncomfortable finding: the daughter effect runs in an unexpected direction. [1] — Darby Saxbe "Dads with daughters: more T drop, more stress: Darby Saxbe's lab found that new fathers of daughters show a larger drop in testosterone, sp…" 53:31 Fathers of daughters show a larger testosterone drop, spend less time caring for babies, and report more parenting stress and worse bonding in the first six months — compared to fathers of sons. Saxbe's hypothesis, which Chris Williamson arrives at independently, is that dads default to proprioceptive, rough-and-tumble, physically activating play styles that feel natural and intuitive with baby boys but less so with baby girls. Parental cognitions about children's character are also shaped by known sex before birth — girls are described as delicate and sweet, boys as rambunctious and tough — which may set up different default interaction patterns from day one. An Emory University study adds neurological detail: fathers' brains show differential responses to daughters' happy faces versus sons' distressed expressions.
Darby Saxbe's lab found that fathers of daughters show a bigger testosterone drop, spend less time with their babies, and report more parenting stress and worse bonding — compared to fathers of sons. The likely driver is that dads default to active, rough-and-tumble play styles that feel more natural with boys, leaving them less prepared for daughters.
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