I wish my verbal ability were higher.

I would have gone so much farther in college if I had studied harder and entered college later.

Educational Testing Service gave me the cognitive skills necessary to be successful in life and in education.

cognitive ability is super useful, but it's just one aspect of a person.

IQ can indeed improve, with study.

And there is a threshold after which IQ becomes useless.

Ashkenazi Jewish intelligence if true may exist mainly in the verbal and mathematical domains.

These two domains are favored on standardized intelligence tests.