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Reliability and validity of the Japanese version of the 24-item Dysfunctional Attitude Scale

Published online by Cambridge University Press:  24 June 2014

Miyuki Tajima ,
Tsuyoshi Akiyama ,
Hatsue Numa ,
Yoshiya Kawamura ,
Yoshie Okada ,
Yoshie Sakai ,
Yuko Miyake ,
Yutaka Ono  and
M. J. Power
Miyuki Tajima*
Affiliation:
Department of Mental Health, Tokyo University Graduate School of Medicine, Tokyo, Japan Department of Neuropsychiatry, Kanto Medical Center NTT EC, Tokyo, Japan
Tsuyoshi Akiyama
Affiliation:
Department of Neuropsychiatry, Kanto Medical Center NTT EC, Tokyo, Japan
Hatsue Numa
Affiliation:
Department of Neuropsychiatry, Kanto Medical Center NTT EC, Tokyo, Japan Rissho University Faculty of Psychology, Tokyo, Japan
Yoshiya Kawamura
Affiliation:
The University of Tokyo Hospital, Tokyo, Japan
Yoshie Okada
Affiliation:
Department of Neuropsychiatry, Kanto Medical Center NTT EC, Tokyo, Japan St Luke’s College of Nursing Graduate School, Tokyo, Japan
Yoshie Sakai
Affiliation:
Department of Neuropsychiatry, Kanto Medical Center NTT EC, Tokyo, Japan Department of Psychiatry, Juntendo University School of Medicine, Tokyo, Japan
Yuko Miyake
Affiliation:
National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan
Yutaka Ono
Affiliation:
Health Center, Keio University, Tokyo, Japan
M. J. Power
Affiliation:
Department of Clinical and Health Psychology, University of Edinburgh Medical School, Edinburgh, UK
*
Miyuki Tajima, Stress Management Office, Keio University, Shinanomachi 35, Shinjuku-ku, Tokyo 160-8582, Japan. Tel: 81-3-5363-3214; Fax: 81-3-5363-3215; E-mail: ta-ji88@cf7.so-net.ne.jp
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Abstract

Background:

The 24-item Dysfunctional Attitude Scale (DAS-24) is a short version of the Dysfunctional Attitude Scale, which is a self-report inventory for depressogenic schemata.

Objective:

The object of this study was to examine the reliability and validity of the Japanese version of the DAS-24 (DAS-24-J).

Methods:

Subjects consisted of non-clinical sample 1 (248 university students), non-clinical sample 2 (872 Japanese company employees) and a clinical sample (59 depressed out-patients).

Results:

Internal consistency was satisfactory in all three samples, Cronbach’s α coefficient being higher than 0.85. Test–retest reliability was satisfactory in non-clinical sample 1. The interclass correlation coefficient was 0.79 and there was no significant difference in the average score of DAS-24-J between the two points. The DAS-24-J showed satisfactory concurrent validity with the Japanese Irrational Belief Test-20 (r= 0.76); Automatic Thoughts Questionnaire – Revised total (r= 0.46), negative (r= 0.53) and positive (r=−0.41); and the Beck Depression Inventory-II (r= 0.44 for non-clinical sample, r= 0.63 for clinical sample). The clinical sample showed a significantly higher DAS-24-J score than non-clinical sample 2. According to a factor analysis combining all three samples, three factors were extracted: factor 1 (11 items) corresponded with ‘achievement’ in the original version, factor 2 (6 items) with ‘self-control’ and factor 3 (5 items) with ‘dependency’.

Conclusion:

The DAS-24-J is a reliable and valid instrument to measure depressogenic schemata in Japanese.

Keywords

cognitive theorydepressogenic schemataDysfunctional Attitude Scale-24Japanese versionreliabilityvalidity
Type
Research Article
Information
Acta Neuropsychiatrica , Volume 19 , Issue 6 , December 2007 , pp. 362 - 367
Copyright
Copyright © 2007 Blackwell Munksgaard

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