Empirical results are presented as regards the implementation of a latent-trait psychometric model by means of conditional maximum likelihood estimation. Items are scored polychotomously into varying numbers of nominal categories and the test and item characteristic curves and information functions are examined. It is concluded that scoring items…

A linear regression model was used to select items from a pool of 700 arithmetic word problems to be used in a computer-assisted mathematics curriculum for elementary school students. The experimental procedure first involved a stepwise linear regression analysis of a student's performance over a set of 25 problems. The probability correct for…

The central assumption in domain-referenced testing (DRT), as presented in this book, is that a domain may be determined which adequately represents a particular universe of knowledge. After a domain has been established, the technological and practical problem of using domain-referenced testing must be solved. This book contains a collection of…