Item Calibration in Incomplete Testing Designs

This study discusses the justifiability of item parameter estimation in incomplete testing designs in item response theory. Marginal maximum likelihood (MML) as well as conditional maximum likelihood (CML) procedures are considered in three commonly used incomplete designs: random incomplete, multistage testing and targeted testing designs. Mislevy and Sheenan (1989) have shown that in incomplete designs the justifiability of MML can be deduced from Rubin's (1976) general theory on inference in [...]

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