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RT @albrgr: Interesting paper using sibling gender IV on Norwegian register data for 1960s births to find that having 3 sibs instead of 2 i…
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Interesting paper using sibling gender IV on Norwegian register data for 1960s births to find that having 3 sibs instead of 2 increases male parents # of kids in next gen by .25 while reducing female parent # of kids by ~offsetting amount https://t.co/fMGb