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Evidence has accumulated to suggest that the mean IQs of Orientals in the United States and in the countries of the Pacific Basin are higher than those of Whites (Caucasoids) in the United States and Britain. This paper presents evidence from IQ tests on 4858 6-year-old Chinese children in Hong Kong. On the Coloured Progressive Matrices these children obtained a mean IQ of 116. Samples from Australia, Czechoslovakia, Germany, Romania, the UK and the US obtain IQs in the range 95–102. It is suggested that these results pose difficulties for the environmentalist explanations commonly advanced to explain the low mean IQs obtained by some ethnic minorities in the United States. [ABSTRACT FROM PUBLISHER]

Several studies have assessed intelligence using Raven's Progressive Matrices (RPM) across the life span. However, limited research has been done on the current Chinese population. This study recruited 6970 children and adolescents (age = 8–16 years) from eastern China to investigate intelligence and its variations. The results showed that Standard Progressive Matrices (SPM) scores are correlated to Coloured Progressive Matrices (CPM) scores for 8–16 year olds (P < 0.05). The 50th percentile of both the SPM and CPM scores could be an effective indicator of the cognitive growth curve increase from ages 8 to 16 years. The CPM test, a simple version, may be applicable for children under 10 years of age, and the SPM scores could be used for the transformation of the IQ score. Girls slightly outperformed boys with two IQ points at age 13 and15 to 16 years. In addition, day students had an advantage of 1–2 SPM scores and 2–4 IQ points compared to boarding school students between the ages of 12 to 14 years. In general, our results agree with sex differences on the RPM, especially at ages 13, 15 and 16 years. Further research is needed to enhance performance on the intelligence tests. [ABSTRACT FROM AUTHOR]