Document Detail

An introduction to Rasch measurement for scale development and person assessment.
MedLine Citation:
PMID:  12885145     Owner:  NLM     Status:  MEDLINE    
This article: a) outlines some of the limitations of True Score Theory, b) discusses some advantages of Rasch measurement, and c) compares the results of Rasch and factor analytic techniques applied to a common data set. Using a mail survey, 206 female members of a national nursing association completed Ryckman's (1982) Perceived Physical Ability Scale. Exploratory factor analysis identified one factor with a Cronbach alpha of .78. Rasch fit statistics also identified one dimension with a person reliability of .76. Rasch methods were also used to investigate the rating scale functioning, additional construct validity issues, and person diagnosis. Discrepancies between the two estimates of internal consistency are discussed and differences in the utility of the two methodologies are reviewed.
Everett V Smith; Karen M Conrad; Karen Chang; Jo Piazza
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of nursing measurement     Volume:  10     ISSN:  1061-3749     ISO Abbreviation:  J Nurs Meas     Publication Date:  2002  
Date Detail:
Created Date:  2003-07-29     Completed Date:  2003-09-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9318902     Medline TA:  J Nurs Meas     Country:  United States    
Other Details:
Languages:  eng     Pagination:  189-206     Citation Subset:  IM; N    
University of Illinois at Chicago, 60607, USA.
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MeSH Terms
Factor Analysis, Statistical
Middle Aged
Nurses / psychology*
Reproducibility of Results
Self Efficacy*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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