Post updated, 6/5/14. See below!
In my earlier post on Gregory Clark’s work, The Son Becomes The Father, I laid bare the case for the known high heritability of human behavioral traits (including values and attitudes) and life outcomes. As well, equally important, I illustrated the complete absence of shared environment influences on these – that is, the effect common environmental forces that children growing up together share. This includes parents and upbringing, making it abundantly clear that parents don’t leave a lasting impact on who we grow up to be. These are towards what I’m calling the “75-0-25 or something” rule, which echos Satoshi Kanazawa’s “50-0-50 rule” summarizing behavioral genetic research, only more accurately so. This “75-0-25 or something” rule means the following:
For the variance in behavioral traits and life outcomes, each factor accounts for the following fractions:
- Heredity: 75% (though the variance is typically…
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