Research supported in part by the Research Foundation of Oklahoma State University.

A computer program for item evaluation, reliability estimation, and test scoring is described. The program contains a variable format procedure allowing flexible input of responses. Achievement tests and affective scales may be analyzed. (Author)

Research performed pursuant to a grant from the Charles F. Kettering Foundation.

Procedures are presented for equating simultaneously several tests which have been calibrated by the Rasch Model. Three multiple test equating designs are described. A Full Matrix Design equates each test to all others. A Chain Design links tests sequentially. A Vector Design equates one test to each of the other tests. For each design, the Rasch…

This report analyzes a two-step program designed to achieve security in the administration of the English Comprehension Level (ECL) test given by the Defense Language Institute. Since the ECL test score is the basis for major administrative and academic decisions, there is great motivation for performing well, and student test compromise is…

This primer is an introduction to item response theory (also called item characteristic curve theory, or latent trait theory) as it is used most commonly--for scoring multiple choice achievement or aptitude tests. Written for the testing practitioner with minimum training in statistics and psychometrics, it presents and illustrates the basic…

The main hypothesis was that the unit is appropriate for use at the kindergarten level. The evaluation was based upon the examination of four factors: 1) the reliability and item characteristics of the unit text; 2) the effect of bias associated with pupil sex, race, socio-economic status on geography achievement and learning gains; 3) the effect…