APS
30th APS Annual Convention · 2018
Disordered Thresholds Detect Respondent Imprecision: An IRT Simulation Study
- Lauren Clough
University of Arizona - Zhongyuan Li
University of Arizona - Monica Erbacher
University of Arizona - Jacqueline Scherr
University of Arizona - Michelle Higgins
University of Arizona
Abstract
Data representing two simulated respondent errors: idiosyncratic response scale interpretation and inability to discriminate between (dis)agreement options (imprecision), were analyzed with IRT. Under the PCM, disordered thresholds successfully detected respondent imprecision. PCM and GPCM results are less successful at detecting idiosyncratic response scale interpretation.
Psychometrics
