Name: GGUMLINK
Price range: $$

Author: Roberts, James
Contact: http://prdlab.gatech.edu/unfolding/freesoftware/
Description: GGUMLINK is a Windows-based FORTRAN program that equates parameter estimates from the Generalized Graded Unfolding Model using a variety of methods (Roberts, AERA 2001 Conference Paper ). The program is suitable for equating parameter estimates derived from separate calibrations in which common (anchor) items are included in each calibration.
Analyses: Item & Test Analysis; Reliability; Scaling; Scoring
System Requirements: Windows
Measurement Model: IRT/Rasch
License Type: Freeware
Documentation: PDF manual; worked examples; users can join messag

Software License

Freeware

Measurement Model

Item Response Theory; Rasch

Analysis

Item & Test Analysis; Reliability; Scaling; Scoring