ERIC Number: ED064357
Record Type: RIE
Publication Date: 1972-Apr
Reference Count: 0
Maximum Likelihood Estimation of Ability Under the Normal Ogive Model: A Test of Validity and an Empirical Example.
Kolakowski, Donald; Bock, R. Darrell
The estimation of values of a latent-trait presumed to underlie a given set of item response data is made on the basis of dichotomously scored items utilizing the so-called "normal ogive model" of Lawley and Lord. This model provides an internal scale of measurement, scores which are independent of the particular test items employed, individual estimates of the standard error of each subject's score, and a statistical test of how well the data conforms to the constraints of the model. Tables and graphs present the study results. (Author/DB)
Publication Type: N/A
Education Level: N/A
Sponsor: National Science Foundation, Washington, DC.
Authoring Institution: N/A
Note: Paper presented at the annual meeting of the American Educational Research Association (Chicago, Illinois, April 1972)