Modelling uncertainty and response styles in ordinal data

Rosaria Simone and Gerhard Tutz

Statistica Neerlandica, 2018, vol. 72, issue 3, 224-245

Abstract: Mixture models for ordinal responses in the tradition of cub models use the uniform distribution to account for uncertainty of respondents. A model is proposed that uses more flexible distributions in the uncertainty component: the discretized Beta distribution allows to account for response styles, in particular the preference for middle or extreme categories. The proposal is compared with traditional cub models in simulation studies and its use is illustrated by two applications.

Date: 2018
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