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Direct linkDeMars, Christine E. – Educational and Psychological Measurement, 2008
The graded response (GR) and generalized partial credit (GPC) models do not imply that examinees ordered by raw observed score will necessarily be ordered on the expected value of the latent trait (OEL). Factors were manipulated to assess whether increased violations of OEL also produced increased Type I error rates in differential item…
Descriptors: Test Items, Raw Scores, Test Theory, Error of Measurement
