If we can't agree that IQ is a useful predictor ("measurement") of cognitive performance and potential, perhaps the most supported and studied theory in all of psychology, then I'm afraid we have no common point of discussion.
That’s an alternate reality. IQ as a measurement of “intelligence” is highly controversial and is better explained by home life/environment.
That’s an alternate reality. IQ as a measurement of “intelligence” is highly controversial and is better explained by home life/environment.