This paper provides a guide to the minimum size of treatment groups, inferred from the relationships between pupil norms and norms for class averages of standardized achievement tests. (Editor)

This report describes the experimental design, presents the contract provisions, and provides conclusions and recommendations. The document is comprised of five chapters that discuss (1) the statistical analysis methods used, (2) the problems of using standardized tests in performance contracting, (3) the contractual procedures between OEO and the…

This study reviews current research seeking to determine the relative importance of methodology upon success in language learning programs. Six language classes, instructed for a full academic year according to either the principles of the audiolingual or cognitive code language learning theory, were the focus of an experiment to statistically…

This report describes an experiment concerned with a possible relationship between the inability to learn basic educational skills, such as reading and writing, and the inability to organize incoming stimuli for communication purposes, in spite of adequate intellectual potential. The study had three main tasks. The first problem was to develop a…