Linked Life Data

11997584

Source:http://linkedlifedata.com/resource/pubmed/id/11997584

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2002-5-8
pubmed:abstractText
The purpose of this study was to evaluate the effects of item grouping on local independence and item invariance, the characteristics of items scaled under the Rasch model that make them sample-free. Item fit and calibration for attitude items presented in a grouped versus random order were examined. It was hypothesized that grouping items to facilitate interpretation central to a construct may result in a failure of invariance. Data were 107 responses to a 40-item mail survey of teachers' opinions about the Ontario Ministry's grade 9 literacy test. Effects of grouping and item phrasing on invariance were found. Results, however, generally support the use of grouping of items to provide a higher person separation, and potentially higher quality data.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
1529-7713
pubmed:author
pubmed:issnType
Print
pubmed:volume
3
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
38-49
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Item grouping effects on invariance of attitude items.
pubmed:affiliation
University of Missouri, Columbia 65203, USA. frantom@health.missouri.edu
pubmed:publicationType
Journal Article