Reversed thresholds in partial credit models : A reason for collapsing categories?

Wetzel, EunikeEunikeWetzelCarstensen, Claus H.Claus H.Carstensen0000-0002-5736-46952019-09-192015-07-1420141552-3489https://fis.uni-bamberg.de/handle/uniba/21956engReversed thresholds in partial credit models : A reason for collapsing categories?article10.1177/1073191114530775