KMID : 0389420180260020103
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Korean Journal of Stress Research 2018 Volume.26 No. 2 p.103 ~ p.114
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Development and Validation of the Korean Dysfunctional Depression Scale
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Kim Joung-Nam
Lee Soon-Mook Choi Sung-Won Chae Jung-Min Seo Dong-Gi Lee Heon-Jeong Won Eun-Soo
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Abstract
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Background: The purpose of this study is to develop and validate the Korean dysfunctional depression scale, which measures pathological depression including subclinical depression and clinical depression.
Methods: To achieve this purpose, we collected data from patients diagnosed as having depressive disorder and clients with chief complaints related to depression, and 360 data were analyzed.
Results: Using item linkage methods, we decided 20 items as a dysfunctional depression scale for group research. The results of reliability verification show high internal consistency and stable test-retest reliability. In addition, the result of factor validity demonstrates general factor and two specific factors-the first specific factor is ¡®the physical-somatic factor¡¯ and the second specific factor is ¡®the pessimistic cognition and alienation factor¡¯. Convergent validity was also confirmed good.Lastly, this study performed standard setting workshop consisting of content experts to decide cut-scores of dysfunctional depression scale. Through the workshop, the standard cut-score of normal-subclinical depression was decided as 44 and the standard cut-score of subclinical-clinical depression was decided as 58. The classification consistency and accuracy indices were to validate standard cut-scores.
Conclusions: This Korean dysfunctional depression scale is verified to have high reliability and validity.
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KEYWORD
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Dysfunctional depression, Scale development, Validation, Item linking, Reliability, Validity
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