README.md

In JihongZ/IRTmixed: Fit IRT model in general linuear mixed model

IRTmixed

A R package to fit IRT model (1PL, 2PL, GRM, PRM) in linear mixed model framework

Installation

devtools::install_github("JihongZ/IRTmixed")

Usage

dt <- read.csv(file = paste0("~/irtmixed_sim/plmixed_files/data_15item_n",n_obs,"_rep",repnumber,".csv"))

mmod1 <- irtmixed::irtmixed(x = dt, itemtype = "2pl", a.fix = true.parm[1,1])

mmod1.param <- summary(mmod1)

JihongZ/IRTmixed documentation built on May 11, 2020, 11:54 p.m.