"I also wouldn't be surprised if many of the tests contain an element of uncorrected racial/cultural bias, and the psychometric industry has been exploiting the inability of the government to enforce the law (Employment Equity Act), which makes discriminatory testing illegal."
Why would the psychometric industry want to exploit such a lack of enforcement by vending a discriminatory test? Do you think their customers are interested in using tests that give bogus results?
Perhaps I was unclear. I don't think that they deliberately bias the tests, I do think that they don't rigorously validate the tests to prove that they are non-discriminatory, perhaps because of laziness, or because they lack the statistical know-how.
Why would the psychometric industry want to exploit such a lack of enforcement by vending a discriminatory test? Do you think their customers are interested in using tests that give bogus results?