Snapshot · Modern Wisdom
Research from the Netherlands shows that maternal brain gray matter shrinks again with a second child but in different regions, suggesting brain change is U-shaped — volume is lost then partly regained.
Where this was said
At 51:30 · chapter starts 50:25
Does the neurological transformation of parenthood reset and recur with each new child? A Dutch study of second-time mothers provides a first answer: yes, but differently. [1] — Darby Saxbe "Brain change is U-shaped with more kids: Research from the Netherlands shows that maternal brain gray matter shrinks again with a second ch…" 51:30 The brain shrinks again, but in regions associated with managing multiple simultaneous inputs and task-switching rather than the same areas as the first time — precisely the cognitive skills needed to parent more than one child. Saxbe describes this as a U-shaped pattern overall, with volume loss followed by partial recovery and then another targeted loss. Chris poses the natural question about twins and triplets, which Saxbe finds genuinely fascinating: twin parents likely get a double-dose of parenting neurochemistry and may speedrun the second-child brain adaptation from birth, while also forcing greater paternal involvement simply out of necessity.
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