Biomaterial Database

Multicomponent latent trait models for complex tasks. 2006

Susan E Embretson, and Xiangdong Yang

School of Psychology, Georgia Institute of Technology, 654 Cherry St., Atlanta, GA 30332-0170, USA. susan.embretson@psych.gatech.edu

Contemporary views on cognitive theory (e.g., Sternberg and Perez, 2005) regard typical measurement tasks, such as ability and achievement test items, multidimensional, rather than unidimensional. Assessing the levels and the sources of multidimensionality in an item domain is important for item selection as well as for item revision and development. In this paper, multicomponent latent trait models (MLTM) and traditional multidimensional item response theory models are described mathematically and compared for the nature of the dimensions that can be estimated. Then, some applications are presented to provide examples of MLTM. Last, practical estimation procedures are described, along with syntax, for the estimation of MLTM and a related model.

UI	MeSH Term	Description	Entries
D011582	Psychological Theory	Principles applied to the analysis and explanation of psychological or behavioral phenomena.	Social Cognitive Theory,Psychologic Theory,Psychological Theories,Theories, Psychological,Theory, Psychological,Cognitive Theories, Social,Cognitive Theory, Social,Psychologic Theories,Social Cognitive Theories,Theories, Psychologic,Theories, Social Cognitive,Theory, Psychologic,Theory, Social Cognitive
D003071	Cognition	Intellectual or mental process whereby an organism obtains knowledge.	Cognitive Function,Cognitions,Cognitive Functions,Function, Cognitive,Functions, Cognitive
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014481	United States	A country in NORTH AMERICA between CANADA and MEXICO.
D015233	Models, Statistical	Statistical formulations or analyses which, when applied to data and found to fit the data, are then used to verify the assumptions and parameters used in the analysis. Examples of statistical models are the linear model, binomial model, polynomial model, two-parameter model, etc.	Probabilistic Models,Statistical Models,Two-Parameter Models,Model, Statistical,Models, Binomial,Models, Polynomial,Statistical Model,Binomial Model,Binomial Models,Model, Binomial,Model, Polynomial,Model, Probabilistic,Model, Two-Parameter,Models, Probabilistic,Models, Two-Parameter,Polynomial Model,Polynomial Models,Probabilistic Model,Two Parameter Models,Two-Parameter Model