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Dimensionality of the repression sensitization scale
Author(s) -
Carlson Roy W.
Publication year - 1979
Publication title -
journal of clinical psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.124
H-Index - 119
eISSN - 1097-4679
pISSN - 0021-9762
DOI - 10.1002/1097-4679(197901)35:1<78::aid-jclp2270350109>3.0.co;2-u
Subject(s) - guttman scale , psychology , curse of dimensionality , psychometrics , variance (accounting) , statistics , scale (ratio) , social psychology , clinical psychology , developmental psychology , mathematics , physics , accounting , quantum mechanics , business
Study of the internal structure of the R‐S Scale failed to support a finding of unidimensionality or bipolarity, as theory suggests. A factor analysis of the item matrix revealed a poorly defined multifactor structure that contained five relatively weak unipolar factors ( N = 200). Guttman's Reproducibility and the Kuder‐Richardson Coefficient adjusted for test length similarly failed to support the presence of a unifactor structure. The relatively high Coefficient of Dimensionality was rejected as evidence of unidimensionality given the uncertainty over what psychometric properties this index reflects. The high proportion of S ‐item interaction variance showed considerable equivocal item content, which suggested marked error factors due to S s' idiosyncratic interpretation of items.