Item characteristic curves estimated without knowledge of their mathematical form—a confrontation of Birnbaum's logistic model
- 1 March 1970
- journal article
- Published by Cambridge University Press (CUP) in Psychometrika
- Vol. 35 (1) , 43-50
- https://doi.org/10.1007/bf02290592
Abstract
Item characteristic curves are estimated without restrictive assumptions about their mathematical form. The resulting curves are compared with estimates obtained under the assumption that all curves are of logistic form. Surprising agreement is found between the curves obtained by the two unrelated methods.Keywords
This publication has 2 references indexed in Scilit:
- Estimating True-Score Distributions in Psychological Testing (an Empirical Bayes Estimation Problem)Psychometrika, 1969
- An Analysis of the Verbal Scholastic Aptitude Test Using Birnbaum's Three-Parameter Logistic ModelEducational and Psychological Measurement, 1968