I once sat in a lecture where the lecturer held up The Bell Curve as an example of fragrant racism in society today. In a lecture hall of about 40 students, I was the only one that had the gall to ask for evidence. Why should we conclude the writer is racist and why should we conclude he is wrong? I didn't want the book's core claim to be true, but I wasn't ready to completely dismiss it simply because I wanted to. And I wasn't ready to label the writer a racist just because I disagreed with him. So I asked the question. Do we have a good debunking of it? The lecturer was shocked and outraged, as were my fellow students. I eventually did find a good debunking, but not from this lecturer or anybody in the class.
Yeah, when you google "The Bell Curve", the supposed academic critiques of it tend to be filled with far more blatant bias, ideology, emotion, and poor science, than can be reasonably leveled at the Bell Curve itself, despite its objective flaws.
Included among the pseudo-science bullshit used to dismiss "The Bell Curve" are assertions that general intelligence is a meaningless construct or that the tests are all just cultural biased. These objections are ideological and are not compatible with modern cognitive science in which notions of general intellectual abilities that are highly applicable to countless basic mental processes in everyday life if more alive and well, and supported by evidence than ever.
Shortly after the "The Bell Curve",
a group of 52 of the leading scientists with expertise in the area and who all publish in the most mainstream journals published a paper detailing the current state of the science, because they were so dismayed at the false claims coming from the people trying dismiss "The Bell Curve". The paper does not claim to agree with the notion that racial differences in IQ are biological and in fact most of the paper's signatories have argued directly against this and other aspects of the Bell Curve, but the author's all saw a need to make it clear that the science shows that general intelligence is a meaningful and highly predictive construct, and that racial differences cannot be accounted for by cultural bias, and that many efforts have been made to account for the differences with environmental/experiential factors and they have only been able to account for a small % of the differences. IOW, racial differences in IQ are real, meaningful, likely impactful, and not yet explained despite assertions by both those claiming its biology or those claiming its all environment.
Sadly, that paper made little impact on the pop-psych discourse and the same unscientific dismissal of intelligence research continues and is oft repeated on these boards.