Although the Raven Matrices is a visual test, thus making it potentially biased against Jewish verbal talent, it’s not an especially spatial test either, and seems to load on a higher level abstract thinking that transcends both domains. Indeed Jensen regarded the Raven as the purest measure of g (general intelligence).
One major Israeli study using the Raven was published by S Kaniel & S Fisherman in 1990. They compared 250 Ethiopian Jews, ages 14-15, on the Progressive Matrices Standard (PMS) test to1740 Israeli Jews, ages 9-15. They claimed “Most of the Israeli age groups functioned near the 50th percentile of Raven’s normative scale, whereas the performance of the Ethiopian Jews fell between the 5th and the 10th percentile”
However Richard Lynn was having none of it. In a 1994 commentary, Lynn noted that the that the actual percentiles of the Israeli Jews ranged from 20th to 37th and the Ethiopian Jews were at the 2nd percentile.
Over the weekend Pumpkin Person verified that the Israeli Jews did indeed score from the 20th to 37th percentile on 1979 UK norms just as Lynn claimed (IQ 87 at age 10.5 to IQ 95 at age 14.5; averaging across all ages, IQ 92), however Ethiopian Jews actually scored in the 1st percentile (IQ 65) not the 2nd percentile as Lynn had claimed.
Although the British norms were 11-years old by the time the Israeli study was published, I decided not to adjust for the Flynn effect because “Anglo” kids tested in Iowa in 1986, scored no higher than the UK 1979 norming, suggesting the Flynn effect had plateaued during that period.
If Israeli Jews average IQ 92 on the Raven, it is interesting to ask what Ashkenazi Israeli Jews score. An analysis by Hanna David and Richard Lynn found that in Israel, European Jews score about 14 IQ points higher than Oriental Jews though the gap is bigger on verbal tests. For example on the Israeli WISC, the gap was 1.1 standard deviations (SD) (17 IQ points) on verbal IQ but only 0.93 SD on Performance IQ (14 IQ points).
So let’s say on the Raven, Ashkenazi Jews score 14 IQ points above non-Ashkenzi Jews in Israel, and are 32% of Israeli Jews. Since the average Israel Jews scores IQ 92 on the Raven (if the above study was representative), then simple arithmetic tells us that non-Ashkenazi IQ is 88 and Ashkenazi IQ is 102 (at least on the Raven) though looking at table I, there might be a small tendency for Jewish IQ to improve during childhood.