BILOG MG is one of the mostly used software products in the field of Item Response Theory. Together with Multilog, Parscale and Testfact, you have an excellent suite of IRT products.

BILOG MG - features

- Graphical user interface
- Efficient analysis of binary items including multiple choice or short-answer items scored right, wrong, omitted, or not-presented
- Capable of large scale production analysis, and handling of multiple groups
- Performs item analysis and scoring of any number of subtests or subscales
- Non-equivalent groups equating
- Vertical equating of test forms
- Differential item functioning (DIF)
- Detection and correction for parameter trends over time (DRIFT)
- Calibration and Scoring of tests in two-stage testing procedures
- Estimation of latent ability or proficiency distributions
- Provision for items inserted in tests to estimate item statistics, but not included in calculation of examinee scores ("variant items")
- Item fit statistics, theoretical and empirical reliability
- Information curves and reliabilities for putative test forms
- Presentation quality IRT graphics, can be imported in Word, Access, etc.
- Detailed online HELP documentation includes description of interface, syntax, and examples.

Ordering

For price information and ordering, please visit the Prices and Ordering Page