“…Based on these findings, they maintained that "national IQ explains a significant part of the variations in various measures of human conditions" (Lynn & Vanhanen, 2006: 291). Lynn and Vahnanen's results have been confirmed and extended by numerous studies, mainly by psychologists (for a review: Lynn & Vanhanen, 2012a,b), but also by some economists (Jones & Schneider, 2006;Ram, 2007;Weede & Kampf, 2002). Significant relationships between IQ and socio-economic development levels, measured by GDP per capita and other indicators, have also been found at national and regional levels, for the British Isles (Lynn, 1979), the United States (Kanazawa, 2006a;McDaniel, 2006) Italy (Lynn, 2010a,b;Templer, 2012), Japan (Kura, 2013) and Finland (Dutton & Lynn, 2014).…”