Kevin DennySchool of Economics and Geary Institute, University College Dublin, Dublin, USA
School of Economics, UCD, Belfield, Dublin 4, Ireland

Search for other papers by Kevin Denny in
Current site
Google Scholar
Restricted access


Kanazawa (2007) offers an explanation for the variation across countries of average intelligence. It is based on the idea that 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.

  • S.M. Barnett W. Williams 2004 National intelligence and the Emperors New Clothes Contemporary Psychology: APA Review of Books 49 4 389 396.

    • Search Google Scholar
    • Export Citation
  • D. Borsboom 2006 The attack of the psychometricians Psychometrika 71 3 425 440.

  • J. Bound C. Brown N. Mathiowetz 2001 Measurement Error in Survey Data J. J. Heckman E. Leamer Handbook of Econometrics, vol 5. Handbooks in Economics Elsevier Science Amsterdam 3705 3843.

    • Search Google Scholar
    • Export Citation
  • T.E. Dickins R. Sear A.J. Wells 2007 Mind the gap(s)…in theory, method and data: Reexamining Kanazawa (2006) British Journal of Health Psychology 12 167 178.

    • Search Google Scholar
    • Export Citation
  • G.T.H. Ellison 2007 Health, wealth and IQ in sub-Saharan Africa: Challenges facing the ‘savanna Principle’ as an explanation for global inequalities in Health British Journal of Health Psychology 12 191 228.

    • Search Google Scholar
    • Export Citation
  • R.P. Feynman 1997 Surely you're joking Mr Feynman! W.W. Norton & Co. New York.

  • W. Greene 2007 Econometric Analysis 6 Prentice-Hall Upper Saddle River.

  • S. Kanazawa 2008 Temperature and evolutionary novelty as forces behind the evolution of general intelligence Intelligence 36 99 108.

  • R. Lynn T. Vanhanen 2002 IQ and the wealth of nations Praeger Westport.

  • R. Lynn T. Vanhanen 2006 IQ and Global Inequality Washington Summit Publishers Augusta, GA.

  • U. Neisser G. Boodoo T.J. Bouchard Jr. A.W. Boykin N. Brody S.J. Ceci D.F. Halpern J.C. Loehlin R. Perloff R.J. Sternberg S. Urbina 1996 Intelligence: Knowns and unknowns American Psychologist 51 77 101.

    • Search Google Scholar
    • Export Citation
  • T. Nychba 2004 Review of IQ and the wealth of the nations Journal of Economic Literature 42 220 221.

  • M.H. Wolpoff 1996 Human evolution McGraw Hill New York.

  • M.H. Wolpoff 2005 Multiregional evolution C. Renfew P. Bahns Archaeology: the key concepts Routledge London.

  • E. Zeidler 2004 Oxford Users Guide to Mathematics Oxford University Press Oxford.

  • Collapse
  • Expand

Journal of Evolutionary Psychology 
Language English
Year of
2007 (2003)
changed title
per Year
per Year
Founder Akadémiai Kiadó
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Chief Executive Officer, Akadémiai Kiadó
ISSN 1789-2082 (Print)
ISSN 2060-5587 (Online)

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Jun 2022 0 0 0
Jul 2022 0 0 0
Aug 2022 0 0 0
Sep 2022 0 0 0
Oct 2022 0 0 0
Nov 2022 3 0 0
Dec 2022 0 0 0