The Legacies of R. A. Fisher and K. Pearson in the Application of the Polytomous Rasch Model for Assessing the Empirical Ordering of Categories

@inproceedings{Andrich2013TheLO,
  title={The Legacies of R. A. Fisher and K. Pearson in the Application of the Polytomous Rasch Model for Assessing the Empirical Ordering of Categories},
  author={David Andrich},
  year={2013}
}
Assessments in response formats with ordered categories are ubiquitous in the social and health sciences. Although the assumption that the ordering of the categories is working as intended is central to any interpretation that arises from such assessments, testing that this assumption is valid is not standard in psychometrics. This is surprising given that it has been known for some 35 years that this assumption can be checked routinely using the psychometric Rasch model for more than two… CONTINUE READING