Which author? The Economist author, or Alesina, Giuliano, and Nunn, the authors of the academic study? The Economist is just giving description of the results

Which author? The Economist author, or Alesina, Giuliano, and Nunn, the authors of the academic study? The Economist is just giving description of the results for a popular audience, so I don't think they have to provide serious evidence. The original academic article can be read here: The Quarterly Journal of Economics http://qje.oxfordjournals.org/content/early/2013/02/19/qje.qjt005.abstract http://qje.oxfordjournals.org/content/early/2013/02/19/qje.q... (open access full text, at least for now) I haven't read it, it is a peer reviewed publication, so I imagine they do have some evidence.