Age and gender effect on 'alexithymia in large, Japanese community and clinical samples: A cross-validation study of the Toronto Alexithymia Scale (TAS-20)

被引：96

作者：

Moriguchi Y. ^{[1
]}

Maeda M. ^{[2
]}

Igarashi T. ^{[1
]}

Ishikawa T. ^{[3
]}

Shoji M. ^{[1
]}

Kubo C. ^{[4
]}

Komaki G. ^{[1
]}

机构：

[1] Department of Psychosomatic Research, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira-City 187-8551 Tokyo

[2] College of Art and Design, Joshibi University of Art and Design, Sagamihara, Kanagawa 228-8538

[3] Department of Psychosomatic Medicine, Kohnodai Hospital, National Center of Neurology and Psychiatry, Ichikawa, Chiba 272-8516

[4] Department of Psychosomatic Medicine, Graduate of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582

来源：

BioPsychoSocial Medicine | / 1卷 / 1期

关键词：

Confirmatory Factor Analysis; Japanese Version; Alexithymia; Toronto Alexithymia Scale; Minimum Average Partial;

D O I：

10.1186/1751-0759-1-7

中图分类号：

学科分类号：

摘要：

Background: The construct validity of alexithymia and its assessment using the 20-item Toronto Alexithymia Scale (TAS-20) in Japan is unknown. Low reliability has been found for the third factor of the TAS-20 in some cultures, and the factor structure for psychosomatic disorder patients has not been adequately investigated. Although alexithymia most likely has certain developmental aspects, this has infrequently been investigated. Methods: The newly-developed Japanese TAS-20 was administered to a normative sample (n = 2,718; 14-84 y.o.), along with the NEO Five-Factor Inventory (NEO-FFI) for cross validation. Psychosomatic patients (n = 1,924, 12-87 y.o.) were tested to evaluate the factor structure in a clinical sample. College students (n = 196) were used for a test-retest study. Internal reliability and consistency were assessed, and the factorial structure was evaluated using confirmatory and exploratory factor analyses for both the normative and the clinical samples. The correlations between the TAS-20 and the NEO-FFI factor scores were evaluated. Age-related and gender differences in the TAS-20 were explored using analysis of variance in the normative sample. Results: The original three-factor model of the TAS-20 was confirmed to be valid for these Japanese samples, although a 4-factor solution that included negatively keyed items (NKI) as an additional factor was more effective. Significant correlations of the TAS-20 with the NEO-FFI were found, as has been previously reported. Factor analyses of the normative and patient samples showed similar patterns. The TAS-20 total, difficulty in identifying feelings (DIF), and difficulty in describing feelings (DDF) scores were high for teenagers, decreased with age, and from 30s did not change significantly. In contrast, externally oriented thinking (EOT) scores showed an almost linear positive correlation with age. DIF scores were higher for females, while EOT scores were higher for males, without any interaction between gender and age differences. Conclusion: The original three-factor concept of the TAS-20 was generally supported for practical use. Age-related differences in TAS-20 scores indicate developmental aspects of alexithymia. Alexithymia is made up of two components with different developmental paths: DIF/DDF and EOT. © 2007 Moriguchi et al; licensee BioMed Central Ltd.

引用

共 51 条

[1]

Sifneos P.E., Clinical observations on some patients suffering from a variety of psychosomatic diseases, Acta Medicina Psychosomatica, 21, pp. 133-136, (1967)

[2]

Taylor G.J., Bagby R.M., Parker J.D.A., Disorders of Affect Regulation: Alexithymia in Medical and Psychiatric Illness, (1997)

[3]

Bagby R.M., Taylor G.J., Parker J.D., The Twenty-item Toronto Alexithymia Scale-II. Convergent, discriminant, and concurrent validity, J Psychosom Res, 38, pp. 33-40, (1994)

[4]

Bagby R.M., Parker J.D., Taylor G.J., The twenty-item Toronto Alexithymia Scale-I. Item selection and cross-validation of the factor structure, J Psychosom Res, 38, pp. 23-32, (1994)

[5]

Simonsson-Sarnecki M., Lundh L.G., Torestad B., Bagby R.M., Taylor G.J., Parker J.D., A Swedish translation of the 20-item Toronto Alexithymia Scale: Cross-validation of the factor structure, Scand J Psychol, 41, pp. 25-30, (2000)

[6]

Bressi C., Taylor G., Parker J., Bressi S., Brambilla V., Aguglia E., Allegranti I., Bongiorno A., Giberti F., Bucca M., Todarello O., Callegari C., Vender S., Gala C., Invernizzi G., Cross validation of the factor structure of the 20-item Toronto Alexithymia Scale: An Italian multicenter study, J Psychosom Res, 41, pp. 551-559, (1996)

[7]

Pandey R., Mandal M.K., Taylor G.J., Parker J.D., Cross-cultural alexithymia: Development and validation of a Hindi translation of the 20-Item Toronto Alexithymia Scale, J Clin Psychol, 52, pp. 173-176, (1996)

[8]

Bagby R.M., Taylor G.J., Parker J.D., Loiselle C., Cross-validation of the factor structure of the Toronto Alexithymia Scale, J Psychosom Res, 34, pp. 47-51, (1990)

[9]

Parker J.D., Taylor G.J., Bagby R.M., The 20-Item Toronto Alexithymia Scale. III. Reliability and factorial validity in a community population, J Psychosom Res, 55, pp. 269-275, (2003)

[10]

Taylor G.J., Bagby R.M., Parker J.D., The 20-Item Toronto Alexithymia Scale. IV. Reliability and factorial validity in different languages and cultures, J Psychosom Res, 55, pp. 277-283, (2003)

← 1 2 3 4 5 6 →