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    题名: Validating the cross-cultural factor structure and invariance property of the Insomnia Severity Index: evidence based on ordinal EFA and CFA
    作者: Chen, Po-Yi;Yang, Chien-Ming;Morin, Charles M.
    楊建銘
    贡献者: 心理系
    关键词: Factorial structure;Insomnia Severity Index;Measurement invariance;Multigroup structural equation model;Ordinal exploratory factor analysis
    日期: 2015-05
    上传时间: 2015-12-03 17:44:56 (UTC+8)
    摘要: Objective: The purpose of this study is to examine the factor structure of the Insomnia Severity Index (ISI) across samples recruited from different countries. We tried to identify the most appropriate factor model for the ISI and further examined the measurement invariance property of the ISI across samples from different countries. Methods: Our analyses included one data set collected from a Taiwanese sample and two data sets obtained from samples in Hong Kong and Canada. The data set collected in Taiwan was analyzed with ordinal exploratory factor analysis (EFA) to obtain the appropriate factor model for the ISI. After that, we conducted a series of confirmatory factor analyses (CFAs), which is a special case of the structural equation model (SEM) that concerns the parameters in the measurement model, to the statistics collected in Canada and Hong Kong. The purposes of these CFA were to cross-validate the result obtained from EFA and further examine the cross-cultural measurement invariance of the ISI. Results: The three-factor model outperforms other models in terms of global fit indices in Taiwan`s population. Its external validity is also supported by confirmatory factor analyses. Furthermore, the measurement invariance analyses show that the strong invariance property between the samples from different cultures holds, providing evidence that the ISI results obtained in different cultures are comparable. Conclusions: The factorial validity of the ISI is stable in different populations. More importantly, its invariance property across cultures suggests that the ISI is a valid measure of the insomnia severity construct across countries.
    關聯: Sleep Medicine, 16(5), 598-603
    数据类型: article
    DOI 連結: http://dx.doi.org/10.1016/j.sleep.2014.11.016
    DOI: 10.1016/j.sleep.2014.11.016
    显示于类别:[心理學系] 期刊論文

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