VPG managing partner, Dr. Michael Edwards, presented “Some thoughts on validity and model fit” at the 79th Annual Meeting of the Psychometric Society. Edwards discusses that as scores require validity testing, so do model fit indexes themselves. The slide deck can be downloaded here: Edwards IMPS 2014 7.21.14
Drs. Li Cai and Carrie Houts of VPG will provide an in-depth introduction to the flexMIRT system and provide valuable hands on experience with the software. Find out more about the course here.