An explicit model identifying 10 relevant components of achievement gain scores has been developed. Based on that model, all students under consideration are stratified according to individual observed pretest score, and achievement gains are measured relative to the average and range of gains among students in the same prescore stratum. The…

A study was conducted to understand better a common problem in job development efforts in rehabilitation--the poor returns of mailed-out surveys and, therefore, identification of few job leads for further cultivation. Two experimental job development investigations were used, one with large firms and one with small firms, to examine the effect of…

A number of problems are identified and questions raised about the usefulness of conventional instruments of educational and psychological measurement in curriculum evaluation and research. Four purposes of curriculum evaluation data are identified: (1) advancement of science, (2) curriculum revision, (3) provision of data for the formulation of…