ERIC Number: ED351347
Record Type: RIE
Publication Date: 1992-Aug
Reference Count: N/A
The Utility of IRT in Small-Sample Testing Applications.
Sireci, Stephen G.
The utility of modified item response theory (IRT) models in small sample testing applications was studied. The modified IRT models were modifications of the one- and two-parameter logistic models. One-, two-, and three-parameter models were also studied. Test data were from 4 years of a national certification examination for persons desiring certification in personal financial planning. Sample sizes for the 4 years were 173, 149, 106, and 159, respectively. The stability of the item parameters over the 4 years was investigated, and the utility of the models was examined. All IRT analyses used the MULTILOG computer program. Item parameter stability was not exhibited for one-, two-, or three-parameter models or the modifications of the one- and two-parameter logistic models. Other results neither support nor reject the statement that IRT cannot be used with sample sizes smaller than 200 examinees. Five tables and four graphs are included. Two appendixes show MULTILOG input for two models. (SLD)
Publication Type: Reports - Evaluative; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A
Identifiers: MULTILOG Computer Program; One Parameter Model; Three Parameter Model; Two Parameter Model
Note: Paper presented at the Annual Meeting of the American Psychological Association (100th, Washington, DC, August 14, 1992).