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Development of J apanese version of K ing's S tigma S cale and its short version: P sychometric properties of a self‐stigma measure
Author(s) -
Mizuno Masashi,
Yamaguchi Sosei,
Taneda Ayano,
Hori Hiroaki,
Aikawa Ayako,
Fujii Chiyo
Publication year - 2017
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/pcn.12470
Subject(s) - psychology , internal consistency , statistics , convergent validity , mathematics , psychometrics
Aim The study aimed to develop two J apanese versions of K ing's S tigma S cale, a full version ( KSS‐J‐1 ) and a short version ( KSS‐J‐2 ), through psychometric property testing. Methods The sample included 112 people with mental illness. We tested the constructs of the scales using both confirmatory and exploratory factor analyses. Internal consistency and test–retest reliability were tested. We examined convergent validity with self‐esteem or perceived stigma, and different group validity, using the K essler P sychological D istress S cale ( K 6). Results Whereas a relatively weak model fit (comparative fit index = 0.66, T ucker– L ewis index = 0.63, root mean square error of approximation = 0.097) of KSS‐J‐1 (full version: 28 items) was found, KSS‐J‐2 (short version: 17 items), produced by exploratory factor analysis, had a moderate model fit (comparative fit index = 0.90, T ucker– L ewis index = 0.89, root mean square error of approximation = 0.063). High internal consistency ( KSS‐J‐1 , ω = 0.82–0.89; KSS‐J‐2 , ω = 0.86–0.89) and moderate test–retest reliability ( KSS‐J‐1 , interclass correlation = 0.56–0.88; KSS‐J‐2 , interclass correlation = 0.45–0.85) were reported. Some subscales and the entire scale of KSS‐J‐1 were significantly correlated with self‐esteem and perceived stigma. Conversely, only two subscales in KSS‐J‐2 were significantly correlated with self‐esteem. The scores of each subscale and the entire score for both KSS‐J‐1 and KSS‐J‐2 in the high psychological distress group were higher than the low group ( KSS‐J‐1 , d = 0.61–0.83; KSS‐J‐2 , d = 0.47–0.70), except for the D iscrimination subscale in KSS‐J‐2 . Conclusion Both J apanese versions of K ing's S tigma S cale can be utilized depending on their intended use.