Why is he "flat out wrong" about the testing? African intelligence scores are much lower.
44 karma · joined April 27, 2014
"Cross-sectional survey during the roll-out phase of the law, analysed by timing of survey."
"How does increasingly plainer cigarette packaging influence adult smokers’ perceptions about brand image?"
"For students that have taken the test before and would like to boost their scores, coaching seems to help, but by a rather small amount. After controlling for group differences, the average coaching boost on the math section of the SAT is 14 to 15 points. The boost is smaller on the verbal section of the test, just 6 to 8 points. The combined effect of coaching on the SAT for the NELS sample is about 20 points."
http://nepc.colorado.edu/files/Briggs_Theeffectofadmissionst...