ERIC Number: ED399282
Record Type: Non-Journal
Publication Date: 1996-Apr-12
Reference Count: N/A
The Accuracy and Use of Item Difficulty Calibrations Estimated from Judges' Ratings of Item Difficulty.
Taube, Kurt T.; Newman, Larry S.
A method of estimating Rasch-model difficulty calibrations from judges' ratings of item difficulty is described. The ability of judges to estimate item difficulty was assessed by correlating estimated and empirical calibrations on each of four examinations offered by the American Association of State Social Work Boards. Thirteen members of the association's examination committee served as expert judges, and seven of these judges rated all four examinations. The correlations were highly significant for all four examinations, so judges seem to be able to distinguish among items of varying difficulty. This method can be used to adjust passing scores that yield unacceptably high or low pass rates. (Contains 3 tables and 26 references.) (Author/SLD)
Publication Type: Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A