Does tutoring work? It depends on the test
A reader sends me this question: Hi Emil, I'm wondering what your opinion is on the question of whether reading comprehension skills can be improved through tutoring. I'm an American…
The persistent denial of the intelligence meritocracy: Gary Marks
Gark N. Marks has a new review article out. And it doesn't pull punches! Marks, G. N. (2022). Cognitive ability has powerful, widespread and robust effects on social stratification: Evidence…
IQs by university degrees from SATs
There's a bunch of these claims floating around. The good ones are based on Razib Khan's 10 year old write-up, which I also reblogged later. It looks like this: The…
On the East Asian > White advantage on scholastic tests
It's well known that East Asians (Chinese, Japanese, Korean; CJKs) tend to outperform Europeans ('Whites') on cognitive tests. If we look at the standard IQ tests, the advantage is about…
Standard deviation of total SAT scores: not simply the sum of the standard deviations of subtests
Someone on Reddit for SlateStarCodex: AFAIK, SATs are normed to mean of 500 per section and standard deviation of 100. Assuming that math and verbal are highly correlated, that approximates…
Harvard SAT and IQ: How much regression towards the mean?
http://pumpkinperson.com/2015/04/13/is-the-sat-an-iq-test/ Blog commenter Lion of the Judah-sphere has claimed that the SAT does not correlate as well with comprehensive IQ tests as said IQ tests correlate with one another. At…
Examining the S factor in US states
Abstract A dataset of 25 diverse socioeconomic indicators for US states was compiled and subjected to factor analysis. Results showed that Washington DC was a strong outlier, but if it…
Test prepping discussion
From reddit http://www.reddit.com/r/Khan/comments/1znhcx/khan_academy_gets_rare_partnership_to_close/ Me: Test prepping does not work very well, so it's a minor issue. SAT and ACT tests are mainly tests of g and one cannot train g.…