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Factor structure and concurrent validity of the world assumptions scale
Author(s) -
Elklit Ask,
Shevlin Mark,
Solomon Zahava,
Dekel Rachel
Publication year - 2007
Publication title -
journal of traumatic stress
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.259
H-Index - 134
eISSN - 1573-6598
pISSN - 0894-9867
DOI - 10.1002/jts.20203
Subject(s) - lisrel , confirmatory factor analysis , psychology , psychometrics , scale (ratio) , clinical psychology , test validity , sample (material) , reliability (semiconductor) , validation test , statistics , structural equation modeling , cartography , mathematics , geography , chemistry , quantum mechanics , power (physics) , physics , chromatography
The factor structure of the World Assumptions Scale (WAS) was assessed by means of confirmatory factor analysis. The sample was comprised of 1,710 participants who had been exposed to trauma that resulted in whiplash. Four alternative models were specified and estimated using LISREL 8.72. A correlated 8‐factor solution was the best explanation of the sample data. The estimates of reliability of eight subscales of the WAS ranged from .48 to .82. Scores from five subscales correlated significantly with trauma severity as measured by the Harvard Trauma Questionnaire, although the magnitude of the correlations was low to modest, ranging from .08 to −.43. It is suggested that the WAS has adequate psychometric properties for use in both clinical and research settings.

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