&quot;you ess ians&quot;?<p>I am a European and I used that term because the article declared that USA demonstrated such results. For me, USians more clearly distinguishes different types of American. Since I have not read the scientific  paper, I was not sure whether, say, Canadians had also displayed similar results. If not, I suspect there is possibly a political &#x2F; legal &#x2F; societal cause implied.<p>Amongst other ways, USA is unique in that it is, perhaps more than any other country, populated by people whose ancestors had an <i>ideological</i> reason for living there. It is highly speculative, but it would be really interesting if it could be shown that such an historical filter were somehow behind these results.