>If you’re below 90 you’ll likely have a rough life. Not according to the author... “IQ scores are a measure of a person’s intellectual ability, not the limit

>If you’re below 90 you’ll likely have a rough life. Not according to the author... “IQ scores are a measure of a person’s intellectual ability, not the limit of their intellectual potential.” If the author is right, a mentally disabled person with a IQ of 80 can be a Nobel prize winning physicist, if they only applied themselves. Which is why I think this author is wrong on all counts. As you said, he seems to want it both ways...first to say there is no IQ difference, they saying all differences stem from environmental variables which we know to affect races disproportionately.