Earlier quoted context omitted.
> the book is generally forbidden to be discussed in > "polite" company The problem with studies like this - and also ones that for example attempt to show race-linked differences in "positive factors" - is that they're pretty useless for anything other than the uneducated using as a blunt discrimination tool. Let's say you live in a society where there are blue and green people. A study shows a genetic basis for a d…
The usefulness is if you see a deficiency in a student (or anyone) you can properly understand the reason for it. When you understand the reason you have a chance at actually making things better. I.e. use the data after seeing the performance of someone, rather than using it to predict their performance.
> When you understand the reason
This right here is the problem.Armed with a small amount of data about information over a population on average gives you absolutely no information about any specific case, and the green-skinned child gets special treatment to bring them up to scratch, where the blue-skinned child gets written off as "she's achieving less well because blue-skinned children do".
That's the problem, and that's why people in "polite societies" ignore these studies.