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

Factor 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.