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ERIC Number: ED076598
Record Type: RIE
Publication Date: 1973-Feb
Reference Count: 0
A Computer Program for Estimating Examinee Ability and Item Characteristic Curve Parameters When There are Omitted Responses.
Wingersky, Marilyn S.; Lord, Frederic M.
The major problem in estimating the item characteristic curve parameters is the large number of parameters. The estimation procedure is considered converged when the parameter estimates become less than the errors of calculation; convergence is a slow process. The computer program is written in Fortran IV, and the only input required are the item responses for each examinee. Final output contains the estimated item parameters and abilities. Examples and formulas for models are included as are item response input and output. (RS)
Publication Type: N/A
Education Level: N/A
Sponsor: Office of Naval Research, Arlington, VA. Personnel and Training Research Programs Office.; National Science Foundation, Washington, DC.
Authoring Institution: Educational Testing Service, Princeton, NJ.