Do beautiful people have more daughters?

The analysis of the National Child Development Study (NCDS) in the United Kingdom, which has data on the respondents’ completed fertility at age 47 (virtually all men and women complete their lifetime reproduction by age 45), replicates the earlier findings from the Add Health data in the United States and show that physically more attractive parents are indeed more likely to have daughters than physically less attractive parents.


Being physically attractive at age 7 increases the odds of having a daughter by 23% or decreases the odds of having a son by 19%.  Similarly, net of the same control variables, being physically unattractive at age 7 decreases the odds of having a daughter by 20% or increases the odds of having a son by 25%.

Source: Satoshi Kanazawa, London School of Economics

You can learn more about Kanazawa’s interesting (and controversial) research in his book Why Beautiful People Have More Daughters: From Dating, Shopping, and Praying to Going to War and Becoming a Billionaire– Two Evolutionary Psychologists Explain Why We Do What We Do.

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