> IQ is only a narrow specific type of intelligence biased to western education indeed
I see this claim a lot, but what is even meant by "western education" here? IQ tests show similar results in most countries that have /any/ form of formal compulsory education. It's clear that education or lack of education can affect IQ scores, but not so much that IQ tests are biased by the specification type of education.
The best research I've seen on the matter concludes that education biases the results because in order to receive and participate in an IQ test you need to have some base level of language understanding of the terminology used in the IQ test itself, which implies that you've received some minimal amount of education. The most common IQ test used in the United States, the Stanford-Binet (SB5) generally recommends not administering it to people under the age of 8 years old for this reason, and there are specialized tests for children that show reduced bias for education when used on non-educated populaces.
Or, in summary, it seems standard IQ tests bias for /any/ education, not specifically "western" education. In other words, there's no cultural bias as claimed.
It certainly seemed like a pop quiz the last time I took it. I just can't imagine it's useful outside ranking people arbitrarily for the purposes of shrinking a hiring pool or some similar need.