Document Detail

Logistic response models with item interactions.
MedLine Citation:
PMID:  22233175     Owner:  NLM     Status:  In-Data-Review    
Items that are clustered according to shared content may violate the principle of conditional independence commonly used in item response theory. This paper investigates the capabilities of a logistic item response model in relation to locally dependent item responses. The model includes main effect and interaction parameters that are computed as linear functions of the latent trait. The paper explains the interpretation of the parameters, the maximum likelihood estimation algorithm, the information matrix and some results concerning parameter identifiability. The problem of over-fitting the data is addressed in a simulation study, and two real data examples are described to illustrate the approach, one from the context of a sample survey and the other from ability testing using testlets.
Javier Revuelta
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Publication Detail:
Type:  Journal Article     Date:  2011-01-13
Journal Detail:
Title:  The British journal of mathematical and statistical psychology     Volume:  65     ISSN:  2044-8317     ISO Abbreviation:  Br J Math Stat Psychol     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-01-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0004047     Medline TA:  Br J Math Stat Psychol     Country:  England    
Other Details:
Languages:  eng     Pagination:  32-55     Citation Subset:  IM    
Copyright Information:
© 2011 The British Psychological Society.
Department of Social Psychology and Methodology, Autónoma University of Madrid, Spain.
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