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library("psychonetrics") | |
library("psychTools") | |
library("dplyr") | |
data("bfi") | |
# Extraversion and Neuroticism items: | |
data <- bfi[,11:20] | |
# ggm model: | |
mod_ggm <- ggm(data, estimator = "FIML") %>% | |
runmodel %>% | |
prune %>% | |
modelsearch | |
# CFA model: | |
latents <- c("extraversion","neuroticism") | |
lambda <- matrix(0,10,2) | |
lambda[1:5,1] <- lambda[6:10,2] <- 1 | |
mod_cfa <- lvm(data, lambda = lambda, estimator = "FIML") %>% | |
runmodel %>% | |
prune %>% | |
modelsearch | |
# RNM model: | |
mod_rnm <- rnm(data, lambda = lambda, estimator = "FIML") %>% | |
runmodel %>% | |
prune %>% | |
modelsearch | |
# RNM with only a extraversion factor: | |
lambda <- matrix(rep(1:0,each=5),ncol=1) | |
latents <- "extraversion" | |
mod_rnm_extraversion <- rnm(data, lambda = lambda, estimator = "FIML") %>% | |
runmodel %>% | |
prune %>% | |
modelsearch | |
# RNM with only a neuroticism factor: | |
lambda <- matrix(rep(0:1,each=5),ncol=1) | |
latents <- "neuroticism" | |
mod_rnm_neuroticism <- rnm(data, lambda = lambda, estimator = "FIML") %>% | |
runmodel %>% | |
prune %>% | |
modelsearch | |
# Compare all models: | |
compare( | |
GGM = mod_ggm, | |
RNM = mod_rnm, | |
RNM_extraversion = mod_rnm_extraversion, | |
RNM_neuroticism = mod_rnm_neuroticism | |
) |
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