<strong>Analysing a test with packages (psych, ltm, mirt) in R</strong>

<p>This is an updated tutorial that gives guidance on how to conduct test analysis within the R environment. It demonstrates the following protocols.</p> <p>1. Classical test theory difficulty, discrimination, and total score evaluation.</p> <p>2. 1PL or Rasch analysis</p> <p>3. 2PL analysis</p> <p>4. 3PL analysis</p> <p><br></p> <p>The tutorial uses the following packages: psych, ltm, mirt</p>