Estimating latent correlations between repeated testings |
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Authors: | Erling B Andersen |
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Institution: | (1) Department of Statistics, University of Copenhagen, Studiesæde 6, 1455 Copenhagen, Denmark |
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Abstract: | A model for longitudinal latent structure analysis is proposed. We assume that test scores for a given mental or attitudinal test are observed for the same individuals at two different points in time. The purpose of the analysis is to fit a model that combines the values of the latent variable at the two time points in a two-dimensional latent density. The correlation coefficient between the two values of the latent variable can then be estimated. The theory and methods are illustrated by a Danish dataset concerning psychic vulnerability. |
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Keywords: | Latent correlation longitudinal model Rasch model latent structure analysis |
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