Abstract
The logistic versions of Samejima’s (1969) graded response model and Muraki’s (1992) generalized partial-credit model are parameterized differently by MULTILOG (Thissen, 1991) and PARSCALE (Muraki & Bock, 1996). Procedures for obtaining comparable item parameter estimates from MULTILOG and PARSCALE are described and example command files are provided.

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