Congeneric Normal-Ogive Model
Estimate a Congeneric Normal-Ogive Model
Massage Cuts to the Desired Shape
Transform y Into a Form Where Each Category is An Positive Integer
Predict Method for Conogive Objects
Calculate the Ordinal Reliabiltiy
Standardize Parameter Vectors
Thurstone weights
Trace of matrix
Remove Infinities from Vector, Append and Prepend -Inf and Inf, an...
Transform Likert data to X_hats.
Calculate Sample Xi
Calculate the Theoretical Xi
The congeneric normal-ogive model is a popular model for psychometric data (McDonald, R. P. (1997) <doi:10.1007/978-1-4757-2691-6_15>). This model estimates the model, calculates theoretical and concrete reliability coefficients, and predicts the latent variable of the model. This is the companion package to Moss (2020) <doi:10.31234/osf.io/nvg5d>.