The evidence of superior Asian scoring is now undeniable.
For example, "
Lynn and his colleagues carried out a series of reaction time studies on over 1,000 nine-year-old East Asian children in Japan and Hong Kong, White children in Britain and Ireland, and Black children in South Africa (summarized by Lynn
& Vanhannen, 2002, pp. 66–67). The Progressive Matrices were given as a nonverbal test of intelligence, along with the simple, choice, and odd-man-out tasks. Reaction times and variabilities were measured by computer and hence were not subject to any human error in recording." As expected and as correlated with IQ, East Asians mental speed was faster than that of Whites (and Whites faster than that of blacks).
Moreover, "
The same pattern of average scores on these and other reaction time tasks (i.e., East Asians faster than Whites faster than Blacks) is found within the United States. Jensen (1993) and Jensen and Whang (1994) examined the time taken by over 400 schoolchildren ages 9 to 12 years old in California ... The average reaction times for the three racial groups differ significantly (see
Figure 2)." The tested IQ scores of these kids correlated with reaction times (Jews 113, East Asians 110, Whites 100, Hispanics 89, Blacks 67).
The one study to date that "
has examined East Asian–White difference on psychometric tests as a function of their g loadings; ...confirmed the hypothesis for 15 cognitive tests administered to two generations of Americans of Japanese, Chinese, and European
ancestry. In this case, the more g-loaded the test, the greater the mean East Asian–White group difference favoring East Asians (Nagoshi, Johnson, DeFries, Wilson, & Vandenberg, 1984)."
Overall, "
MRI studies show that brain size is related to IQ differences within race. Moreover, the three-way pattern of group differences in average brain size is detectable at birth. By adulthood, East Asians average 1 cubic inch more cranial capacity than Whites, and Whites average 5 cubic inches more cranial capacity than Blacks." This disparity is even greater when adjusted for proportional body size.
Mind you, much or most of this cognative advantage is in specific areas, but it is real. For example, this graphic of SAT Math scores :
The bottom line is that worldwide "
East Asians score higher on IQ tests than do Whites, both within the United States
and in Asia, even though IQ tests were developed for use in the Euro American culture (Lynn, 1977, 1978, 1982; P. E. Vernon, 1979, 1982). Around the world, the average IQ for East Asians centers around 106; that for Whites, about 100; and that for Blacks, about 85 in the United States and 70 in sub-Saharan Africa... Hundreds of studies on millions of people have confirmed the three-way racial pattern (Jensen, 1998b; Lynn & Vanhanen, 2002; Rushton, 2000)."
See:
https://www.udel.edu/educ/gottfredson/30years/Rushton-Jensen30years.pdf
Graph Link:
http://www.amren.com/news/2012/08/the-asian-flynn-effect/