It's mostly cultural. Your parent's background deeply impacts your own and your relationship to education, science culture. Read Bourdieu if you haven't already.
Its actually 60-80% heritable. The twin adoption study showed that twins raised in different environment have the same IQ. It also makes sense logically; why would only physical characteristics be heritable and not mental ones.
>Read Bourdieu
"Bourdieu contended there is transcendental objectivity, [definition needed] only when certain necessary historical conditions are met."
You're saying "60-80% heritable" as if that meant something. But you're also wrong: not only do separated twins raised in different SES settings have differing IQ results, but the heritability of IQ itself (whatever its cause) is also SES-dependant.
recent studies showing heritability for IQ as high as 80%.[8] IQ goes from being weakly correlated with genetics for children, to being strongly correlated with genetics for late teens and adults."
Bouchard, Thomas J. (7 August 2013). "The Wilson Effect: The Increase in Heritability of IQ With Age"
This doesn't respond to what I just said. Heritability is not evidence of genetic determinism. It makes sense that age would amplify both any extant genetic influences on intelligence, and any gene-environment interactions, while minimizing shared environment facts. The basic idea of "heritability" isn't in question; the genetic determination and fixity of intelligence is.
Correlation is not causation. Generally, adoptive families in these studies come from similar socio-economic backgrounds [1].
With your theory, how would you explain adopted refugees children doing much better at IQ tests than they would have if the stayed in their home countries?
Also dismissing Bourdieu as a midwit? Yeah, ok. Come back when you actually want to expand your world view.
From your own low-effort wikipedia 1st google result link:
" recent studies showing heritability for IQ as high as 80%.[8] IQ goes from being weakly correlated with genetics for children, to being strongly correlated with genetics for late teens and adults."
Bouchard, Thomas J. (7 August 2013). "The Wilson Effect: The Increase in Heritability of IQ With Age"
As for Bourdieu:
"Bourdieu was in practice both influenced by and sympathetic to the Marxist identification of economic command as a principal component of power and agency within capitalist society."
"According to Bourdieu, tastes in food, culture and presentation are indicators of class because trends in their consumption seemingly correlate with an individual's place in society."
If both of these were true you would never have class mobility. I do well for myself but still like hamhocks and beans.
"I like beans but I'm rich, checkmate". You're an idiot.
People do not grow up in isolated vats, and social class is one of the largest influence on one's life. Obviously there are exceptions, not 100% of your life is determined by that. If you can't even fathom how your social class might inform your taste on red wine and such then I don't see what more we have to talk about. Goodbye.