Continuation Ratio Model for Polytomous Items Under Complex Sampling Design

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Quantitative Psychology (IMPS 2021)

Abstract

The use of polytomous items as part of background or context questionnaires and complex sampling designs are two features common in international large-scale assessments (ILSA). Popular choices to model polytomous items within ILSA include the partial credit model, the graded response model, and confirmatory factor analysis. However, an absent model in ILSA studies is the continuation ratio model. The continuation ratio model is a flexible alternative and a very extendable response model applicable in different situations. Although existing software can fit this model, not all these tools can incorporate complex sampling design features present in ILSA studies. This study aims to illustrate a method to fit a continuation ratio model including complex sampling design information, thus expanding the modelling tools available for secondary users of large-scale assessment studies.

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Acknowledgements

Research funded by the Fondo Nacional de Desarrollo Científico y Tecnológico FONDECYT N° 1201129 and FONDECYT N° 11180792. David Torres-Irribarra and Jorge González were partially supported by the Agencia Nacional de Investigacion y Desarrollo (ANID) Millennium Nucleus on Intergenerational Mobility: From Modelling to Policy (MOVI); (NCS2021072).

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Correspondence to Diego Carrasco .

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Carrasco, D., Irribarra, D.T., González, J. (2022). Continuation Ratio Model for Polytomous Items Under Complex Sampling Design. In: Wiberg, M., Molenaar, D., González, J., Kim, JS., Hwang, H. (eds) Quantitative Psychology. IMPS 2021. Springer Proceedings in Mathematics & Statistics, vol 393. Springer, Cham. https://doi.org/10.1007/978-3-031-04572-1_8

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