Item Response Theory Reference Manual
| Publisher: | Stata Press | 
| Copyright: | 2025 | 
| ISBN-13: | 978-1-59718-432-8 | 
| Pages: | 251 | 
     Suggested citation: 
        StataCorp. 2025. Stata 19	Item Response Theory Reference Manual. College Station, TX: Stata Press.
        
Supplemental materials
             A Course in Item Response Theory and Modeling with Stata
            Tenko Raykov and George A. Marcoulides
          
Table of contents
| irt | Introduction to IRT models | 
| Control Panel | IRT Control Panel | 
| irt 1pl | One-parameter logistic model | 
| irt 1pl postestimation | Postestimation tools for irt 1pl | 
| irt 2pl | Two-parameter logistic model | 
| irt 2pl postestimation | Postestimation tools for irt 2pl | 
| irt 3pl | Three-parameter logistic model | 
| irt 3pl postestimation | Postestimation tools for irt 3pl | 
| irt grm | Graded response model | 
| irt grm postestimation | Postestimation tools for irt grm | 
| irt nrm | Nominal response model | 
| irt nrm postestimation | Postestimation tools for irt nrm | 
| irt pcm | Partial credit model | 
| irt pcm postestimation | Postestimation tools for irt pcm | 
| irt rsm | Rating scale model | 
| irt rsm postestimation | Postestimation tools for irt rsm | 
| irt hybrid | Hybrid IRT models | 
| irt hybrid postestimation | Postestimation tools for irt hybrid | 
| irt, group() | IRT models for multiple groups | 
| irt, group() postestimation | Postestimation tools for group IRT | 
| irt constraints | Specifying constraints | 
| estat report | Report estimated IRT parameters | 
| estat greport | Report estimated group IRT parameters | 
| irtgraph icc | Item characteristic curve plot | 
| irtgraph tcc | Test characteristic curve plot | 
| irtgraph iif | Item information function plot | 
| irtgraph tif | Test information function plot | 
| DIF | Introduction to differential item functioning | 
| diflogistic | Logistic regression DIF | 
| difmh | Mantel—Haenszel DIF | 
| Glossary | |
| Combined author index | |
| Combined subject index | 
