Does item homogeneity indicate internal consistency or item redundancy in psychometric scales?

Boyle G.J. (1991) Does item homogeneity indicate internal consistency or item redundancy in psychometric scales?. Personality and Individual Differences, 12 3: 291-294. doi:10.1016/0191-8869(91)90115-R


Author Boyle G.J.
Title Does item homogeneity indicate internal consistency or item redundancy in psychometric scales?
Journal name Personality and Individual Differences   Check publisher's open access policy
ISSN 0191-8869
Publication date 1991
Sub-type Article (original research)
DOI 10.1016/0191-8869(91)90115-R
Volume 12
Issue 3
Start page 291
End page 294
Total pages 4
Subject 2734 Pathology and Forensic Medicine
3200 Psychology
3207 Social Psychology
Abstract The term 'internal consistency' has been used extensively in classical psychometrics to refer to the reliability of a scale based on the degree of within-scale item intercorrelation, as measured by say the split-half method, or more adequately by Cronbach's (1951) (Psychometrika, 16, 297-334) alpha, as well as the KR20 and KR21 coefficients. This term is a misnomer, as a high estimate of internal item consistency/item homogeneity may also suggest a high level of item redundancy, wherein essentially the same item is rephrased in several different ways.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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