ERIC Number: ED241586
Record Type: RIE
Publication Date: 1984-Jan-11
Reference Count: 0
On the Simulation and Analysis of Measurement Model Residuals.
Ludlow, Larry H.
The purpose of this research is to demonstrate that a systematic approach to the graphical analysis of Rasch model residuals can lead to an increased understanding of ordered response data, and that residual patterns do change in predictable ways, and that summary statistics need not be the only piece of evidence for assuring the fit between model and data. Three simple, idealized simulations and then two sets of real data are considered. The research concludes that (1) the measurement error uncovered in the residual analyses was not noticeable in the examination of person and item estimates, nor the person and item fit statistics; and (2) the tailored residuals provided a specific frame of reference within which the observed variation would be understood. (PN)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A
Identifiers: Data Interpretation; Measurement Problems; Rasch Model; Residuals (Statistics)
Note: A paper presented at the Educational Testing Service, January 11, 1984. Based on "The Analysis of Rasch Model Residuals," doctoral dissertation, University of Chicago, 1983.