Amen

Yes, exactly. And as far as cultural bias in IQ tests, it's worse than that when you consider that, in actual practice, IQ tests really don't test anything more than how well a person takes an IQ test.

And after all, what does the word "intelligence" mean? In what way are the findings of various IQ tests relavent to a person's role in society? I've argued with people who've made decent points that "intelligence" does matter in society. But in the end I can never buy into it. Personally, I believe that every single person has something to contribute to society.The problem, though, I think is twofold:

1. Most people seem to have been led to believe that they have nothing to offer to society (part of the reason for the endurance of the lower-lower class); and

2. Society picks and chooses, based on all sorts of criteria and often in a rather ruthless manner, who gets to "contribute" and who doesn't. (Contrarily, or perhaps consistently, my observation for a long time has been that the notion that "in America anybody can be what he/she wants to be" is an outrageous and ultimately destructive fallacy. I've had plenty of arguments on this subject as well.)

As far as 'mental deficiencies', I've always been skeptical, for example, of the word "insane", and I don't much like the word since I've always felt it to be misleading. I do use the word "crazy" an awful lot, but I only use it to describe people with interesting and/or bizarre ideas, who're my favorite sort or people. Ultimately, I don't believe that the word "intelligence" does make a reasonable reflection of a person's psychological being. Everyone is wired differently, and this should be celebrated. We should not have a system that segregates people into categories of those who are "valuable" and those who are "not valuable".