RETRACTED ARTICLE: Surprisingly low results from studies on cognitive ability in developing countries: are the results credible?
Heiner Rindermann
Abstract:Developing countries achieve surprisingly weak results in international cognitive competence studies. The results are about one to two standard deviations below the average norm-values obtained in Western countries. The results are so low that they are sometimes difficult to believe. For example, in the World Bank collection, Nigeria scored 262 student assessment points (SASQ, about two and a half standard deviations below the norm 500, equivalent in the IQ-scale to 64 points); in the Lim et al. collection, Ye… Show more
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