Parscale software description

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

Parscale features

- Easy to use graphical user interface
- One, two and three-parameter logistic models
- Samejima's model for graded responses
- Bock's model for nominal (non-ordered) responses
- Steinberg's model for multiple-choice items
- Handling of multiple-alternative items, such as multiple-choice tests or Likert-type attitude questionnaires
- Scoring of items with multiple alternatives
- Differential item functioning (DIF)
- Handling of data from several populations simultaneously
- Analysis of mixtures of items types
- Testing of item parameters across groups
- Handling of equality constraints and fixed parameters
- Presentation quality IRT graphics, can be imported in Word, Access, etc.
- Detailed online HELP documentation include description of interface, syntax, and examples.

Ordering

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