I haven’t read the book Mismatch (“Mismatch: How Affirmative Action Hurts Students It’s Intended to Help, and Why Universities Won’t Admit It”), so my comments are on what it is reported to say.
A standard deviation is about 15 IQ points, which is not a small amount. If the book argues that a standard deviation of improvement in IQ is minimal, I would wonder about it’s agenda in making that argument. However, a standard deviation of improvement is so much, that I’d want to see the data. If he is just saying that SAT scores improve a standard deviation from middle school to high school, then “duh”. The SAT is not age-normed; IQ tests are.
Earlier versions of the SAT were more highly correlated with IQ test scores. So, SAT scores from before 1995 (I think) could be used as indicators of IQ. The various revisions of the SAT since then have made it more related to achievement than aptitude (and so more coachable). I believe current scores are still somewhat correlated with IQ scores, but not as much as in the past.
The “new SAT” coming out in March 2016 is supposed to be less coachable, but the truth of that statement remains to be seen. The new essay sounds pretty much like taking APUSH will be the appropriate coaching. The effect of the changes on the correlation between SAT and IQ scores also remains to be seen. The questions on obscure vocabulary are suppose to be gone in the new SAT, replaced by determining the meanings of more common words that have flexible meanings when used in less common contexts.
@GMTplus7 I enjoyed that article about UT Austin. Thanks for providing the link.
@jym626 I find the Flynn effect interesting and not too dry. Sorry I didn’t comment earlier. Aside from the variability in test scoring for different ages and eras, I do think that a lot of the things we and kids do now are more like tasks found on IQ tests–general computer things, Sudoku, etc, even some video games likely help. Not very many of us are farmers anymore, so doing things with our brains more of the day may be the cause.
Only an aside: My husband taught lab sections for the Intro to Physics course for life science majors when he was working on his physics PhD at a UC campus. He was constantly complaining about the premeds and how they couldn’t find the slope of a straight line and came begging for him to raise their grades. Of course, he didn’t teach OChem, which I hear is the difficult class in the premed set of courses.