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On a dubious theory of cross-country differences in intelligence

Kevin Denny

No 200931, Working Papers from Geary Institute, University College Dublin

Abstract: Kanazawa (2007) offers an explanation for the variation across countries of average intelligence. It is based on the idea human intelligence is a domain specific adaptation and that both temperature and the distance from some putative point of origin are proxies for the degree of novelty that humans in a country have experienced. However the argument ignores many other considerations and is a priori weak and the data used questionable. A particular problem is that in calculating distances between countries it implicitly assumes that the earth is flat. This makes all the estimates biased and unreliable.

Keywords: intelligence; measurement error; international comparisons (search for similar items in EconPapers)
Pages: 10 pages
Date: 2009-10-22
New Economics Papers: this item is included in nep-neu
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