Many of the countries in the study had relatively recently transitioned to democracy from authoritarian forms of government, so the results of the study may not necessarily apply to countries such as the United States with a long history of democratic government.
该研究中的许多国家最近都从专制政体转变为民主，因此研究结果可能不一定适用于具有悠久民主政府历史的美国等国家。