The rising voter support for populist parties in Western Democracies in recent years has incited academic interest in populist voters and attitudes connected to the voting propensity of populist actors. In line of this research, numerous scales to measure populist attitudes among voters have been proposed. In most cases, however, the measurement of populist attitudes was tailored to specific countries and its applicability to cross-national research on populism was not assessed. This article uses a cross-national survey to assess the measurement invariance, reliability, and validity of a deductively developed inventory for populist attitudes. The findings suggest that there is a common attitudinal base to left- and right-wing populism which may be measured reliably and invariantly across nations.

中文翻译：

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衡量跨国家的民粹主义：测试民粹主义态度清单的测量不变性

近年来，西方民主国家选民对民粹主义政党的支持不断增加，这激发了学术界对民粹主义选民的兴趣以及与民粹主义演员投票倾向相关的态度。根据这项研究，已经提出了许多衡量选民民粹主义态度的量表。然而，在大多数情况下，民粹主义态度的衡量是针对特定国家的，并未评估其对民粹主义跨国研究的适用性。本文使用一项跨国调查来评估以演绎方式开发的民粹主义态度清单的测量不变性、可靠性和有效性。调查结果表明，左翼和右翼民粹主义有一个共同的态度基础，这可以在各国之间进行可靠和不变的衡量。