Some people argue that mean IQs for whites and blacks differ because blacks tend to come from poorer families. A black kid raised with resources equal to a white kid will have the same IQ. Is this the case?
Using data from the General Social Survey, I calculated mean IQ for blacks, whites, and others for several ranges of father's socioeconomic index (SES): 1-2 standard deviations (sd) below average, 1 sd below average to average, average to 1 sd above average, 1-2 sds above average, and over 2 sds. The sample size is 12,016 (immigrants were excluded). Here's a graph that summarizes the results:
Blacks and whites raised at the same SES level do not have the same mean IQs. The higher white average ranges from about 7 points among the poorest group to more than 10 points among the wealthiest group. By the way, other non-whites--mostly Hispanics--are closer to blacks than whites.
Of course, these are the Statistics that Dare Not Speak Their Name. But since you have broken the taboo, let me raise a point that another icon-breaker, Fred Reed, has made:
ReplyDeleteGo to Central America today. Not, I believe, a population with a high mean IQ. And yet, their ancestors built pyramids, had a sophisticated calendar, even invented a positional-exponential numbering system.
What happened?
What happened??
ReplyDeleteEl Diablo happened, dude,
and times are gettn worse
before His Second Arrival:
+ TurnOrBernie.blogspot.com +
-GBY
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