Looks like they are combining PISA, TIMSS, and regional tests into one big scale. That's useful. But Rindermann already did exactly the same thing with his Cognitive Ability scale.
World Bank figures it out too. Add to list of #thoushallnotcite Richard Lynn. Rindermann gets a thanks but no citation.
http://www.lse.ac.uk/fmg/assets/documents/papers/discussion-papers/DP783.pdf …pic.twitter.com/CjX0zRMFbF
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Particularly shabby that they do not cite Rindermann. (I guess it is because his scale had the UK set at 100 and a standard deviation of 15, making it much clearer about what it so closely resembled).
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Rindermann is also superior in that he discusses the smart fraction, which I don't see this paper mentioning.
End of conversation
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How many national estimates are there now (calculating *roughly* the same thing)? Would actually be great to see a summary of all the datasets that exist.
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The 'g' factor. The general growth factor that is best correlated with all other determinants of growth...
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Gabon appears to be an outlier in Africa? Wonder why.
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