Thurstonian CFA and Thurstonian IRT Modeling
Sorts the blocks in ascending numbering
Count paired comparisons
Determine the number of extra blocks
Create the Thurstonian design matrix for paired comparison and ranking...
Correct degree of freedom and fit indices in Thurstonian block models
Performs lavaan estimation of the given model.
Performs Mplus estimation of the given model.
Estimate factor scores based on Genuine Likelihood
Get extra blocks in a Thurstonian design, that links as few blocks as ...
Get extra blocks in a Thurstonian design, that links all blocks.
Creates names for paired comparisons of a given design.
Find all general blocks
Create model matrices for Thurstonian modeling
Determine all paired comparisons
Determine the rank of the design matrix defined by the blocks.
Reads results from Mplus output file.
Recode variables.
Determine the number of redundancies
Calculate reliability estimate for factor scores.
Create data based on Thurstonian model equations
Create lavaan syntax for Thurstonian forced choice analysis
Create Mplus syntax for Thurstonian forced choice designs.
Fit Thurstonian forced-choice models (CFA (simple and factor) and IRT) in R. This package allows for the analysis of item response modeling (IRT) as well as confirmatory factor analysis (CFA) in the Thurstonian framework. Currently, estimation can be performed by 'Mplus' and 'lavaan'. References: Brown & Maydeu-Olivares (2011) <doi:10.1177/0013164410375112>; Jansen, M. T., & Schulze, R. (in review). The Thurstonian linked block design: Improving Thurstonian modeling for paired comparison and ranking data.; Maydeu-Olivares & Böckenholt (2005) <doi:10.1037/1082-989X.10.3.285>.
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