I am a hard worker, do well in school etc person. I was in "gifted" programs in school and even a self-contained gt program for a while. My husband is PG, no questions and it is pretty obvious when you meet him. My daughter is HG and she has great math and verbal skills. However, my husband and DD are qualitatively very very different than I am. I think this is where this argument comes from. They just think differently than most people and you can tell right away, they could not hide it if they tried. I think all IQ scores do is try to quantitatively get at something that is very qualitative, if that makes sense. But the thing about both of them is that their ceiling is significantly higher than most and they are both capable of understanding (and conversing) about things that most people cannot. I don't care how hard a worker you are, you can't be that unless you just are. So not investing in these children as a society is a shame. There IS a difference, tiger mom or not!