A study of the intelligence of Kazakhs, Russians and Uzbeks in Kazakhstan

Data are reported for intelligence measured by the Standard Progressive Matrices Plus of school students in Kazakhstan. Ethnic Kazakhs obtained a mean British IQ of 82.2, ethnic Russians obtained a mean British IQ of 103.2, and ethnic Uzbeks obtained a mean British IQ of 86.0. The IQ of Kazakhstan is estimated at 87.3. analysis showed three factors identified as Gestalt Continuation, Verbal-Analytic Reasoning and Visuospatial Ability, replicating the analysis by Lynn, Allik, and Irwing (2004). The Russians performed significantly better than the Kazakhs in all age groups on Factor g and Factor 1 (Visuospatial Ability). There was no significant ethnic difference for Factor 2 (Gestalt Continuation) for ages 11, 12 and 13, although Russians performed significantly better than Kazakhs for age 10. The Russians scored significantly higher Factor 3 (Verbal-Analytical Reasoning) at ages 11, 12 and 13.