A two-dimensional IRT model is introduced for binary data in the presence of omitted responses. Its parameterization has the advantage to satisfy the following conditions: firstly, the tendency to omit depends on a person latent trait which is distinct from the usual latent ability; secondly, the model belongs to the Rasch family of models, guaranteeing the existence of non-trivial sufficient statistics for the parameters. An application to a real dataset is illustrated.
|Titolo:||Generalizing the Rasch Model to account for omitting behavior|
|Autori interni:||PUNZO, ANTONIO|
|Data di pubblicazione:||2012|
|Rivista:||QUADERNI DI STATISTICA|
|Appare nelle tipologie:||1.1 Articolo in rivista|