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dc.contributor.advisorWood, Phillip K. (Phillip Karl)eng
dc.contributor.authorCho, Seung Bineng
dc.date.issued2007eng
dc.date.submitted2007 Summereng
dc.descriptionThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.eng
dc.descriptionTitle from title screen of research.pdf file (viewed on January 3, 2008)eng
dc.descriptionIncludes bibliographical references.eng
dc.descriptionThesis (M.A.) University of Missouri-Columbia 2007.eng
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Psychology.eng
dc.description.abstractThe method of decomposing individual and group differences on ordered categorical variables into genetic and environmental factors is introduced. Although the genetic factor model is used to identify the relative contributions of genetic and environmental factors on individual differences of phenotypic behavior, Dolan (1989) and Dolan, Molenaar, and Boomsma (1992) developed the method to decompose phenotypic means of variables with the genetic and environmental factors. Often, psychological constructs are measured by ordered categorical variables which can restrict the application of genetic factor model. Assuming an ordered categorical variable as a discretization of underlying latent continuous variable, the latent continuous variable can be modeled by applying (LRV) formulation. The present paper proposes a genetic factor decomposition similar to that proposed by Dolan and colleagues but for ordered polytomous variables in which mean structures of phenotype indicators are included. An example of the approach is described using the data from Australian Twin Registry on conservatism scale. Mean differences between men and women are modeled with genetic and environmental factors. Although the patterns of factor loadings and factor means are different for each sub-dimension of conservatism, the model with means fits well to each sub-dimension which indicates that the source of individual and group differences of conservatism measure are similar.eng
dc.identifier.merlinb61729528eng
dc.identifier.oclc187103820eng
dc.identifier.urihttps://hdl.handle.net/10355/4926
dc.identifier.urihttps://doi.org/10.32469/10355/4926eng
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2007 Theseseng
dc.subject.lcshBehavior geneticseng
dc.subject.lcshHuman behavior -- Mathematical modelseng
dc.subject.lcshPsychology -- Methodologyeng
dc.titleDecomposing individual and group differences of categorical variables with genetic factor modeleng
dc.typeThesiseng
thesis.degree.disciplinePsychological sciences (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.A.eng


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