A (completely unvetted) idea that was just suggested to me by someone:
There’s some folk wisdom that first born children are born later, and spend more time in the womb on average. If this is true, perhaps it mediates the intelligence boosting effect? (I have no strong reason to suspect that it does, but it seems good to note possible hypotheses here.)
Does anyone know if the folk wisdom is true? Does being first born correlate with a longer natal incubation time?
A (completely unvetted) idea that was just suggested to me by someone:
There’s some folk wisdom that first born children are born later, and spend more time in the womb on average. If this is true, perhaps it mediates the intelligence boosting effect? (I have no strong reason to suspect that it does, but it seems good to note possible hypotheses here.)
Does anyone know if the folk wisdom is true? Does being first born correlate with a longer natal incubation time?