Measurement Models Matter: Implicit Assumptions and Cross-national Research
2009
The availability of cross-national survey data has grown exponentially in recent years. While much attention has been paid to increasing the comparability of indicators across countries, less has been done to increase the comparability of measurement models. This article examines the implicit assumptions of four different approaches to measurement modeling—summative scales, pooled exploratory factor analysis, multiple-group confirmatory factor analysis, and locally-conditioned factor analysis, and explores whether substantive conclusions in cross-national work can vary depending on the choice of measurement model. We find that results can vary by method and suggest that (i) the measurement modeling process itself be a critical part of cross-national research, and (ii) analysts be prepared to fully explain and defend measurement modeling decisions. A thorough understanding of the implicit assumptions of measurement modeling is required to avoid drawing conclusions that are little more than arbitrary.
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