National identity is an important concept to be developed, so it is necessary to have a measurement instrument that have evidence of validity and reliability. Thus, the accuracy of the information obtained through measurement of this instrument will be guaranteed.


This article aims to examine the psychometric property of the national identity scale to fulfill the standardization of accurate measurement.


In this study, three analytical approaches were used, those are content validity involving eight subject matter experts (SME), confirmatory factor analysis (CFA) and reliability analysis. For the reliability and CFA approach, 300 students were used as samples who were taken through convenience sampling technique.


The results of the analysis show that out of the 20 items compiled in the content validity analysis, one item is inadequate because it has a below standard score on Aiken's coefficient of validity. This one item then revised again to be included in the tryout and data collection for the next stage of analysis. The results of the CFA analysis show that the model and data are fit and there are two inadequate items, while the contribution of the three factors on the national identity scale is significant. In the third analysis, it was found that an adequate coefficient reliability had an effect on the low Standard Error of Measurement (SEM).


Based on the results of the analysis, it can be concluded that the Indonesian national identity scale has fulfilled good psychometric properties. It can be proven from evidence validity base on content, confirmatory factor analysis (CFA) and reliability analysis.

Keywords: National identity, Psychometrics, Reliability, Content validity, Standard error of measurement,, Confirmatory factor analysis.
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