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A general purpose toolbox for personality, psychometric theory and experimental psychology. Functions are primarily for multivariate analysis and scale construction using factor analysis, principal component analysis, cluster analysis and reliability analysis, although others provide basic descriptive statistics. Item Response Theory is done using factor analysis of tetrachoric and polychoric correlations. Functions for analyzing data at multiple levels include within and between group statistics, including correlations and factor analysis. Functions for simulating and testing particular item and test structures are included. Several functions serve as a useful front end for structural equation modeling. Graphical displays of path diagrams, factor analysis and structural equation models are created using basic graphics. Some of the functions are written to support a book on psychometric theory as well as publications in personality research. For more information, see the personality-project.org/r web page.
16 lines
1 KiB
Text
16 lines
1 KiB
Text
A general purpose toolbox for personality, psychometric theory and
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experimental psychology. Functions are primarily for multivariate
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analysis and scale construction using factor analysis, principal
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component analysis, cluster analysis and reliability analysis,
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although others provide basic descriptive statistics. Item Response
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Theory is done using factor analysis of tetrachoric and polychoric
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correlations. Functions for analyzing data at multiple levels include
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within and between group statistics, including correlations and factor
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analysis. Functions for simulating and testing particular item and
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test structures are included. Several functions serve as a useful
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front end for structural equation modeling. Graphical displays of
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path diagrams, factor analysis and structural equation models are
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created using basic graphics. Some of the functions are written to
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support a book on psychometric theory as well as publications in
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personality research. For more information, see the
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personality-project.org/r web page.
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