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A Study of Factor Structure of the Korean Version of the 20-Item Toronto Alexithymia Scale
Korean J Stress Res 2019;27:380-388
Published online December 31, 2019
© 2019 Korean Society of Stress Medicine.

Sojin Yun , Jaeeun Shin , Taehun Lee

Department of Psychology, Chung-Ang University, Seoul, Korea
Correspondence to: Taehun Lee
Department of Psychology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea
Tel: +82-2-820-5896
Fax: +82-2-820-5896
Received November 15, 2019; Revised December 13, 2019; Accepted December 13, 2019.
Articles published in stress are open-access, distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Background: The purpose of this study is to examine the factor structure of the Korean version of the 20-Item Toronto Alexithymia Scale. The TAS-20 (source of the TAS-20K) has been supported the three-factor correlated model. However, some factor structure studies of the TAS-20 rejected the three-factor correlated model and adopted alternative models.
Methods: In study 1, we conducted a comparison study of the alternative measurement models by using CFA. In study 2, we examined scale reliability and gender measurement invariance of the factor structure. To examine the alternative models and scale reliability, we using the bifactor model reliability indices.
Results: As a result, the DIF and DDF factors have a close relationship but the EOT factor has some differences with DIF and DDF. So we adopted a two-factor correlated model with group factor. And the adopted factor structure has partial measurement invariance. Therefore we can compare gender differences of the TAS-20K.
Conclusions: This study has significance that examining TAS-20K’s factor structure and examining measurement invariance in gender.
Keywords : TAS-20K, Alexithymia, Bifactor model, Confirmatory factor analysis, Measurement invariance test

December 2019, 27 (4)

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  • Chung-Ang University

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