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Reliability and validity of the Japanese edition of the Defense Style Questionnaire 40
Author(s) -
HAYASHI MOMOKO,
MIYAKE YUKO,
MINAKAWA KUNINAO
Publication year - 2004
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1111/j.1440-1819.2003.01209.x
Subject(s) - psychology , neuroticism , concurrent validity , test validity , extraversion and introversion , test (biology) , clinical psychology , reliability (semiconductor) , loevinger's stages of ego development , style (visual arts) , psychopathology , validity , id, ego and super ego , psychometrics , personality , big five personality traits , social psychology , power (physics) , physics , history , archaeology , quantum mechanics , paleontology , biology , internal consistency
Defense styles have a close relationship with ego development and psychopathology. The purpose of the present paper was to examine the reliability and validity of the Japanese edition of the Defense Style Questionnaire (DSQ‐40; Andrews et al . 1993). Six hundred and six Japanese university students (348 female) completed the DSQ‐40 and Maudsley Personality Inventory (MPI). The neurotic tendency had positive correlations with immature and neurotic defense styles and a negative correlation with the mature defense style. The extroversion tendency had positive correlations with the mature and neurotic defense styles and a negative correlation with the immature defense style. There was a significant test–retest correlation for all items of the DSQ‐40 ( n = 284). The results show that the Japanese version of the DSQ‐40 had concurrent validity with the MPI and a test–retest reliability of 2 months, although there was some doubt about the validity of the factor structure of the DSQ‐40. Therefore, the DSQ‐40 is a useful scale in Japan to measure ego development and ego function through defense styles.