The generation of empirically-based equations is within the grasp of most researchers in occupational education. This paper was designed to develop a sensitivity to the need for cross-validation in these circumstances. Program CROSVAL is a means of bridging the gap between the need for, and mechanization of, cross validation. (Author/DS)

The model for educational measurement developed by George Rasch, a Danish psychometrician, is reviewed and its application to occupational educational testing discussed. The Rasch model is an adaptation from the theory of latent trait analysis. According to it, answering an item correctly is a function of the difficulty of the item and the ability…

The purpose of this study was to investigate the practicality of multiple discriminant function analysis for deriving item response weights. Item responses on a job satisfaction questionnaire administered to 219 professional workers and 242 semi-skilled customer workers were analyzed. Discriminant functional analysis was conducted on the total…