XcalibreT 4 represents the leading edge in software for item response theory (IRT) analysis of assessment data. XcalibreT 4 calibrates your test using 4 dichotomous and 5 polytomous IRT models, and produces professional reports summarizing the analysis, complete with embedded graphics and tables to facilitate data interpretation. XcalibreT 4 is the most user-friendly comprehensive IRT software available; no more DOS command code!
Xcalibre 4 is designed to be user-friendly, with a straightforward graphical user interface that involves no DOS-style command code. All options are specified by radio buttons and check boxes; once you have all of your specifications set, simply hit the "Run" button!