A very interesting study implies that spanking lowers IQ by approximately 2.8-5 points, on average 3.9 points. The more the kid is spanked, the more the IQ drops. Kids were tested at age 5 and then retested at various ages after that. The kids that were spanked the most had their IQ’s drop the most. The worst drop was seen for kids who kept getting hit into the teen years.
The study looks pretty good, because it is looking at IQ’s at a certain age, and then correlates the actual falls in scores with an environmental variable, in this case spanking.
This tends to rule out parental IQ and genetics. I.e., the stupider the parent, the more they are going to hit the kid, and the smarter the parent, the less they hit their kid, since beating your kid is a pretty stupid thing to do. Or on the other end, the dumber the kid, the they act up, and the more they get hit. The smarter the kid, the better they act, so the they get hit.
But it is not normal for an IQ score to fall like that, so that would tend to rule out these confounding variables.
Black parents spank and hit their kids like crazy. I’ve seen them doing it many times, often in public. It’s conceivable that Black IQ scores could rise by 4 points or so if Black parents would quit beating on their kids so much.
Black IQ scores in the West are very interesting. Setting US White IQ = 103, Black IQ at age 5 = 98, yet at age 24 = 89.8. 98 is a very high score, and it’s only 5 points below Whites. If you have spent a lot of time around really young Black kids, you will notice that they are not exactly stupid at all. In fact, they seem to be quite alert, curious and actually intelligent.
Yet after age 5, Black IQ starts to drop, and by age 24, it has fallen to 89.8. There are very reasons suggested for this drop. One is that the extreme positive environment in the US artificially elevates US Black scores in youth, when environmental effects are strongest. Environmental effects tend to fade with adulthood, when genetic effects tend to kick in. So the drop is just genes kicking in, and the early charge is not sustained.
Others say that Blacks mature faster, and this explains the dropping scores, but I analyzed Black IQ scores in Africa deeply, and I found little if any drop, certainly not a 10 point fall. White scores do not drop at all with age.
So heavy Black corporal punishment may be one of the factors in that 10-point fall.
Let’s look at the lineup:
Upper tier US Jewish 116 US Black African 110 US East Indian 109 US East Asian 108 US White 103 US average 100 US Black age 5 98 US Hispanic (2nd generation) 98 Lower tier US Filipino 97 US Eskimo 94 US Hispanic (average) 92.5 US Amerindian 92.5 US Polynesian 90 US Black age 24 89.8 US Hispanic (1st generation) 88 US Hmong 85
Some things need explaining in this chart.
First of all, the US White IQ has been changed from 100 to 103, so everyone’s score has been bumped up three points as a result. This is because tests used to be normed at the US White score = 100, but they changed that recently and now the US average = 100 and the US White score has been bumped up three points, because White scores are three points higher than the US average.
All scores are for the ethnic group inside the US, not in their home lands, where scores may and do differ. Hence, scores are lacking for many groups in the US since I lack access to scores in the US.
Indian (109 versus 85) and African (110 versus 70) immigrant scores are much higher than in their countries. This is obviously some selective immigration going on here. We are selecting mostly the best and brightest of the Africans and Indians, as it ought to be.
US East Asian does not include Hmong or Filipinos, and generally = Koreans, Chinese and Japanese.
US Jews are Ashkenazi Jews. Sephardic Jews might only score 93 or so.
I am guessing, but I think that Hmong scores are artificially depressed due to poor English language skills. Their test scores show a profound high math and very poor verbal trend. I have met many of these people, and they are not unintelligent at all.
The fact that Black kids have high IQ’s, and Black African immigrants have some of the highest IQ’s in the US (Higher than US Whites!), shows that racist stereotyping along the lines of “niggers ain’t got no brains,” still widely seen among racists, lacks empirical rigor on the individual level anyway, depending especially on age cohort and nation of origin.