Code to accompany the paper "Evaluating measurement invariance in categorical data latent variable models with the EPC-interest"

Summary

This archive contains data, R code, and Latent GOLD syntax that reproduce the simulation study and two applications discussed in the paper "Evaluating measurement invariance in categorical data latent variable models with the EPC-interest" by Oberski, Vermunt & Moors and published in Political Analysis. This README file is a Markdown document detailing the files found in the present archive.

File list

Directory File name Short description
. README.md This file (plaintext Markdown version)
. README.pdf This file (PDF version)
./Application-1
DFactor-quadratic.lgs Latent GOLD input for the "ideal point" model
read_roll_call.R R code that takes data from the oc package and writes roll_call_sen90.dat
roll_call_sen90.dat Data file containing Senators' votes in various 1990 US Senate roll calls.
./Application-2/data
covariates.tab Posterior probability output from the LG analysis
data1.dat.gz Posterior classification of classes with covariates, used by ../R/plot-covariates.R
iso_3166_2_countries.csv Country name-ISO code database used for the plots
WV6_Data_rdata_v_2014_06_04.rdata.gz World Values Study dataset as a gzipped R binary datafile
./Application-2/inputs
inglehart_wvs6_long_gdp.lgs Latent GOLD input for the multilevel latent class model.
inglehart_wvs6_long_gdp.rsp WVS data file as used by Latent GOLD choice
inglehart_wvs6_long.alt "alternatives" datafile as used by Latent GOLD choice
inglehart_wvs6_long.set "choiceset" datafile as used by Latent GOLD choice
./Application-2/R
plot-covariates.R R code that generates plots and maps based on output from Latent GOLD
data-handling.R R code that takes the WVS data and generates the .rsp files that are analyzed by Latent GOLD (found in ../data directory)
data-handling-functions.R Convenience functions used by data-handling.R
./Simulation
lg_simulation.R R code that calls Latent GOLD to run the simulation study
results/res_nobs_delta All raw simulation results (tab-separated)
results_simulation_5648595823.rdata Saved summaries (means, medians, sds) of the simulation study
test_model.lgs Latent GOLD syntax specifying the model to be run on each simulated dataset.