ERIC Number: ED044433
Record Type: RIE
Publication Date: 1970-Mar
Reference Count: 0
Information Curves and Efficiency of Three Logistic Test Models.
Hambleton, Ronald K.; Traub, Ross E.
The purpose of this study was to determine the efficiency of the estimates of ability provided by the one-parameter logistic model as compared to the estimates provided by the more general two- and three-parameter models. Several tests were simulated with item parameters meeting the assumptions of either the two- or three-parameter model. For each test, the information provided by ability estimates appropriate to the one-, two- and three-parameter models was compared at several ability levels. The results indicate that it is particularly important, when guessing affects test scores, to use the scoring system of the three-parameter model for estimating the ability of low-ability examinees. (Author)
Publication Type: N/A
Education Level: N/A
Authoring Institution: Massachusetts Univ., Amherst. School of Education.
Note: Paper presented at the annual meeting of the American Psychological Association, Miami, Florida, March 1970