Tell a kid he's supposed to do badly on an IQ test, and he will. How anyone can overlook such a fundamental realization is amazing. And yet, the racists go on nattering about how their tests - which do not hold up from generation to generation - couldn't possibly be giving them the result everyone expects.
As much as I hate to counter an assertion about tendencies and averages with a mere anecdotal counterexample, I'm going to do it here.
I can't imagine any better circumstances to counter your assertion above about social expectations than what I'm about to describe. I live in Alabama. I was born here, schooled here as a child, and except for a seven-year period when I attended university out of state, have lived here my entire life -- 43 years. The popular conception is that I have grown up in a hotbed -- no,
the traditional hotbed of redneck southern racism and discrimination against black persons. Let's assume for the sake of argument that conception is true.
Let's also assume for the sake of argument that we can place racial labels on persons based on visible facial and sometimes body features and skin tone which roughly correspond to those shared by a visually identifiable group. Let's call it "race," as that term has historically been used in the US.
I attended and was graduated from a public high school in the city. Its composition was fairly representative of the racial makeup of my state as a whole at the time. I'm guessing it was roughly 70% white, 20% black, and about 10% other, which included Asians, Latinos, and Native Americans (although the latter could arguably include probably about 1/2 the white population, as a great many "white" kids here claim to be of at least 1/16th Cherokee heritage).
Out of 465 graduates in my high school class, our valedictorian was a black female. Anyone who agrees with the premise that by and large, most of us can readily identify someone as "black" if they have many facial features commonly associated with black persons and a dark skin tone as well would readily identify her as "black." She most certainly self identified with being "black" as well, as did her entire family. My point is that she didn't look racially ambiguous, as some persons do; she was definitely black. She was our valedictorian because she is brilliant and highly motivated to succeed, as is her entire family, which includes her father, her mother, a younger sister, and two younger brothers.
Not only did she handily finish first in my class by quite a margin, but she scored extremely well on her SAT and ACT tests (although I don't know the precise numbers). She attended MIT for her undergraduate and graduate degrees on academic scholarships. Today she is president of a large construction company she runs with her dad and her brother. Her younger sister finished 4th in her class at Harvard Law School and clerked for Justice Thurgood Marshall. Now she's a partner in a Wall Street law firm in New York City. Her middle brother got his undergraduate and graduate degrees from Vanderbilt, and her younger brother had to make do with two degrees from Auburn, poor underachiever that he is. Their mother is a college professor.
Anyway, my point is that according to your theory that social expectations largely determine outcomes on intelligence tests (and I'll play fast and loose and use the SAT and ACT as roughly corresponding with IQ tests measuring "q"), then my classmate shouldn't have done so well. For Ed's sake, she grew up as a black girl in Ala-f'ing-Bama in the 60s and 70s. Weren't them NASCAR lovin', rasslin' watchin' idiots down there still hanging negroes from trees and burning crosses in their yards? How the hell did that little black girl end up besting all her high falutin' white classmates? Hell, she even beat all them Oh-ree-ental kids in math. WTF?
I think the answer probably lies with her family. At some point or other -- and they are all descended from former African slaves, by the way, although I suppose as is true of so many southern black persons, at some point some of her ancestors may have had a few rolls in the hay with a white person or two -- her folks or her grandparents or someone in there decided not to play into expectations of them imposed by society and they used their own brains, their own work ethic, and their own self-respect to break out of the ghetto, or more likely the cotton picking share-cropping serfdom of The Man. Boy, did they break out of it.
Of course, that doesn't mean that the larger society around them suddenly expected them to do well. Their names and reputations didn't precede them when we began high school. They excelled solely on their own merit, despite all social expectations -- those from the larger "white" society around them, and those from their own "black" society that didn't expect them to be able to make it in a white man's world -- that according to you should have prevented them from scoring well on tests. After all, they were told by society that they were supposed to be stupid and lazy.
Sorry, Yahzi, I'm not buying the social expectations nonsense as an explanation. Does it play some role? I suppose that's possible. Does it account for the profound differences in the mean IQ test scores when broken down by "race" that cannot be due to chance that Pesta has been discussing? Nope, not by a long shot. Personally, I think this "q" we've been reading about has got to be the result of some complicated interplay between heritability and strong, positive parental influence when children are very young, and likely necessarily continuing through puberty. My classmate and friend got both in abundance. Social expectations were hardly the chief determinant in her academic performance and measured IQ that you suggest they should have been, nor have they been in her professional success.
Of course I'm no professional with respect to social sciences, hard sciences, or psychology or psychometrics, so all of that is merely my own lay postulating. Your mileage may vary, etc.
AS