Twin studies are hard to explain through any means other than genetics I've seen an analysis of them as recently as 2015, not just in the 70s and 80s. https://w

Twin studies are hard to explain through any means other than genetics I've seen an analysis of them as recently as 2015, not just in the 70s and 80s. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270739/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270739/ >Your anecdotal evidence of high IQ parents (ugh!) having high IQ children is the same anecdotal evidence that sociologists have been describing for decades that high SES parents have high SES children No, I've seen people who grew up with low SES but had parents/grandparents who were consistently A students or were employed in prestigious intellectual jobs, and lo and behold, they ended up doing better in things like school than you would expect for somebody of their SES. >Bias, racism I'm just going to turn this around on you. Why should I not believe you're bias and racist and simply want to disprove IQ testing so as to undermine the social position and access to societal resources certain groups have as a result of IQ testing and things like it such as standardised testing? There's plenty of profit in painting certain groups as oppressors whose success is actually just robbery, and not an accident of genetic difference, since this consequently justifies racist measures to correct this inequity. People can benefit from such notions both directly and socially through association with a popular movement. I'm pretty sympathetic to the idea of IQ lacking validity because I can't make strongly convincing arguments that IQ predicts anything besides academic success and it's hard to then argue our measures of academic success aren't themselves arbitrary and disconnected from practical utility. It's arguably too hard and too arbitrary to distill "intelligence" down to a few standardised tests and prove those tests have cross-domain validity. I don't have much sympathy to the idea that IQ is not heritable based on nothing but ad hominem and the idea this position is anti-racist because it's not what I read from the evidence.