TY  - JOUR
TI  - An Examination of Item Response Theory Item Fit Indices for the Graded Response Model
AU  - LaHuis, David M.
AU  - Clark, Patrick
AU  - O'Brien, Erin
PY  - 2009
PB  - SAGE Publications
LA  - eng
AB  - The current study examined the Type I error rates and power of several item response theory (IRT) item fit indices used in conjunction with the graded response model (GRM). Specifically, S — χ2, χ2*, and adjusted χ 2 degrees of freedom ratios (χ2/dfs) were examined. Model misfit was introduced by manipulating item parameters and by using a different IRT model to generate item data. Results indicated lower than expected Type I error rates for S — χ2 and χ 2*. Adjusted χ2/dfs resulted in large Type I error rates when used with cross validation and very low Type I error rates when used without cross validation. χ2* and adjusted χ 2/dfs without cross validation were the most powerful overall.
UR  - https://doi.org/10.1177/1094428109350930
DO  - 10.1177/1094428109350930
T2  - Organizational research methods: ORM
VL  - 14
IS  - 1
SN  - 1552-7425
SN  - 1094-4281
SP  - 10-23
UR  - https://pollux-fid.de/r/cr-10.1177/1094428109350930
H1  - Pollux (Fachinformationsdienst Politikwissenschaft)
ER  -