PMC4506144_01
Geographic distribution of FTR and savings.. The map on the left shows the geographic distribution 'strong' and 'weak' FTR languages. The map on the right shows the distribution of the savings residuals variable. Points represent languages and colour represents the value of the propensity to save residuals. The values range from a low propensity (yellow) to a high propensity(red).
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PMC4506144_01_pone.0132145.g007.jpg
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One concern with the linguistic data was that it picked out European languages, which tend to be spoken in countries which are more economically prosperous than some other parts of the world (criticism by Dahl, see Fig 7).