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Swedish universities Scales of Personality (SSP): construction, internal consistency and normative data
Author(s) -
Gustavsson J. Petter,
Bergman Hans,
Edman Gunnar,
Ekselius Lisa,
Von Knorring Lars,
Linder Jürgen
Publication year - 2000
Publication title -
acta psychiatrica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.849
H-Index - 146
eISSN - 1600-0447
pISSN - 0001-690X
DOI - 10.1034/j.1600-0447.2000.102003217.x
Subject(s) - cronbach's alpha , psychology , extraversion and introversion , normative , psychometrics , neuroticism , personality , personality assessment inventory , internal consistency , scale (ratio) , personality test , clinical psychology , big five personality traits , test validity , social psychology , philosophy , physics , epistemology , quantum mechanics
Objective: A thorough revision of the Karolinska Scales of Personality (KSP) was made by reducing the number of items and improving the psychometric quality as concerns face validity, internal consistency and response differentiation. The revised version was labelled The Swedish universities Scales of Personality (SSP) and now include 91 items divided into 13 scales. Method: The SSP were evaluated in a normative, randomly drawn sample ( n =741). All scales were found to be approximately normally distributed. Results: The Cronbach's α coefficients ranged from 0.59 to 0.84. The mean inter‐item correlations (M IIC ) ranged from 0.17 to 0.43. The scale intercorrelation matrix yielded a three‐factor solution with Factor 1 reflecting Neuroticism; Factor 2 Aggressiveness; and Factor 3 reflecting Extraversion. Conclusion: The original KSP scales were revised, shortened, modernized and psychometrically evaluated. The psychometric properties and the usefulness of the test battery were found to be substantially improved.