race realism and race-related IQ ideas are partially true. a fair amount of what they say is approximately reasonable. certainly not all the claims are correct. and there's one big but.
race and genes do not determine IQ or character traits. culture does. the reason race correlates with IQ is because race correlates with culture which correlates with IQ. people of the same race tend to share more of the same culture than people of different races. so, the actual causes are ideas.
the methods psychologists and geneticists use would identify an infant-smiling gene as an IQ gene if parents are nicer to smiling infants and better-treated infants end up smarter, even though it's really not. their methods would also identify a height gene as a basketball success gene, except they try to be careful not to look like idiots so they won't make that particular claim.
ppl tend to dismiss it as implausible that parents would treat children significantly differently in reaction to minor genetic traits, but i think it's extremely plausible and fits observations of actual parents.
people routinely think their infant has a "personality", which they seem to largely make up, in their imagination, based on small traits that don't mean much. hell, people think their cat has a personality.
people in general are unaware of lots of what they do and why. parents are unaware of lots of how they treat children, e.g. much of the gender-based treatment they do.
parents are also bad at observing children's learning processes and recognizing when the child is learning something, what he's learning, how he's learning it, and what parental actions affect the learning.
if you think parents and teachers are largely clueless about what's going on with young children, it makes sense there could be a ton of cultural transmission that they don't realize. if you think parents and teachers have a pretty complete understanding of what's going on, then it makes sense to think genes play a large role, since you will doubt they would have missed much in the way of cultural transmission.
we can all agree that children grow up with lots of traits that their parents didn't intentionally try to teach them. if you think "It's rare for a child to learn something without a teacher (e.g. parent, book, movie) which is intentionally trying to teach it.", then you're gonna think lots of traits come from genes. Where else would they come from? but if you think lots of teaching happens without conscious intention by the teacher, then you don't need to attribute it to genes.
see also: IQ (3 blog posts by me) and Yet More on the Heritability and Malleability of IQ (explains how the word "heritable" is used misleading. in technical jargon, it just means there's a correlation.)