Factor

Author: Urbano Lorenzo-Seva & Pere J. Ferrando
Contact: http://psico.fcep.urv.cat/utilitats/factor/
Description: FACTOR 9.2 was developed for three reasons. First, exploratory factor analysis (FA) is still an active field of research although most recent developments have not been incorporated into available programs. Second, there is now renewed interest in semiconfirmatory (SC) solutions as suitable approaches to the complex structures are commonly found in item analysis (e.g., McDonald, 2000). Finally, some popular item response theory (IRT) models can be fitted as FA models by using an underlying-variables approach. A program incorporating developments along these lines was thought to be highly useful for practitioners.
Analyses: Item & Test Analysis; Scaling; Scoring; MCMC estimation
System Requirements: Windows
Measurement Model: IRT/Rasch
License Type: Freeware
Documentation: brief guide, technical reports