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| mudfold-package | MUDFOLD : A nonparametric unfolding item response theory model for dichotomous preferential-choice data. |
| ANDRICH | Andrich's attitude scale towards capital punishment |
| as.mudfold | Function for calculating MUDFOLD statistics for a given unfolding scale. |
| EURPAR2 | Preferences of European party activists. |
| Loneliness | De Jong-Gierveld loneliness scale |
| mudfold | MUDFOLD: Van Schuur's nonparametric IRT model for dichotomous responses that have been generated by an unfolding process. |
| mudfoldsim | Function for constructing artificial item response data generated under an unfolding response process. Unfolding processes model the proximity (distance) between person and item parameters. |
| pick | Transform items to preference binary data. |
| Plato7 | Plato's Seven Works |
| plot.mdf | 'plot' function for '"mdf"' class objects. |
| print.mdf | 'print' method for '"mdf"' class objects resulted from the 'mudfold' function. |
| summary.mdf | 'summary' method for S3 class '"mdf"' objects. |