Abstract
Spearman's hypothesis tested at the level of items states that differences between groups on the items of an IQ test are a function of the g loadings of these items, such that there are small differences between groups on items with low g loadings and large differences between groups on items with high g loadings, and it has been confirmed in a limited number of studies. In this paper, we tested Spearman's hypothesis, comparing a group of Libyan secondary school children (N=1080) with other groups of secondary school children from Bosnia and Herzegovina, Estonia, Ukraine, Russia, South Africa, Ireland, and Chile (total N=7476). The analyses were carried out on 9 comparisons between the Libyan children and the other children. Spearman's hypothesis was strongly confirmed with a mean weighted r with a value of .61. We conclude that Spearman's hypothesis tested at the item level appears to be a more regular phenomenon than previously thought.
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