All posts by Li Cai

DIA 2016 Validity and Fit for Purpose

Drs. Wirth and Edwards of VPG will be joined by Drs. Ashley Slagle (Aspen Consulting) and Johnathan Rubright (National Board of Medical Examiners) when they discuss the roll of modern validity theory in evaluating a COA’s “fit for purpose”. Join them at DIA 2016 for Session #247 entitled “Fit for Purpose and Modern Validity Theory in PROs”. Learn more here.  

flexMIRT® Training at IMPS 2016

Drs. Wirth and Houts will be teaching an IRT software pre-conference workshop at the 2016 International Meeting of The Psychometric Society. The class is a full-day training workshop offering an introduction and overview of flexMIRT® features and capabilities as well as hands-on experience. Additional information and comprehensive course descriptions may be found on the conference website.

flexMIRT® Training at NCME 2016

Drs. Cai and Houts will be teaching an IRT software pre-conference workshop at the 2016 annual meeting of the National Council on Measurement in Education. The class is a full-day training workshop offering an introduction and overview of the flexMIRT® features and capabilities as well as hands-on experience. Additional information and comprehensive course descriptions may be found on the conference websites. Conference Program Here

flexMIRT v1 Support

Due to new security protocols, flexMIRT version 1 will no longer be supported after January 1, 2016. If you are using the software it will continue to work until your license expires but you may see a “server not found” error when starting the software. You can always upgrade to version 3, free of charge, with an active flexMIRT license.

Dr. Cai Receives FABBS Award

Li Cai was honored with the Federation of Associations in Behavioral & Brain Sciences (FABBS) Foundation Early Career Impact Award during the annual meeting of the Society of Multivariate Experimental Psychology in October 2015, in Los Angeles, California. Building Statistical Tools to Measure and Improve Well-Being

ISOQOL Presentation: Longitudinal IRT

Dr. R. J. Wirth will be presenting on the use of longitudinal item response theory models for scale development in small samples. The presentation, entitled “PRO development with small samples: An innovative use of repeated measures IRT”, will be presented on October 22nd during session 107 (starting at 4:05 PM Pacific) at the ISOQOL 22nd Annual Conference in Vancouver.