On the basis of several reviews of the literature, Lynn... concluded that the average IQ of the Black population of sub-Saharan Africa lies below 70. In this paper, the authors systematically review published empirical data on the performance of Africans on the following IQ tests: Draw-A-Man (DAM) test, Kaufman-Assessment Battery for Children (K-ABC), the Wechsler scales (WAIS & WISC), and several other IQ tests (but not the Raven's tests)... Results show that average IQ of Africans on these tests is approximately 82 when compared to UK norms.

Table 4. Results by subsets of samples.



Table 5. Estimates of mean IQs per country on the basis of studies in Table 2 and studies from the Raven's study.



Fig. 1. Scatterplot of data from study by Lynn (2006) and Lynn and Vanhanen (2006).



Fig. 2. Scatterplot of data from study by Rindermann (2007).



Fig. 3. Scatterplot of data from study by Lynn and Mikk (2007).



Fig. 4. Scatterplot of data from study by Lynn et al. (2007).



Fig. 5. Mean of samples that meet our inclusion criteria against the inverse of the standard error.



Fig. 6. Mean of samples from studies published prior to 2006 against the inverse of the standard error.

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