This booklet consists of materials developed on differentiated staffing. Nine sections cover a definition of terms, the executive teacher plan, some new teacher models, a position statement on the concept of differentiated staffing, a process approach to model development, and information on administrating the differentiated staff. In addition,…

An empirical study of the nature and variability of the relevance judgment process was conducted from July 1, 1965 to September 30, 1967. Volume I of the final report presents a literature review and statement of the theoretical framework of the study, a discussion of the experimental design and a summary of data analyses. The study had two…

This volume consists of appendices to the final report on a study of the nature and variability of relevance judgments connected with document searching. Included in these appendices are: (1) all test materials and forms used in the experiments with medical librarians, medical experts, medical scientists, and medical students who were asked to…

Eighth grade students, randomly assigned to three criterion performance levels, studied matrix algebra in three programed lessons. Student achievement, ability, time spent, and other measures were obtained; and minimal variance criterion performance levels, analogous to production isoquants, were attained. A Cobb-Douglas (log-linear) function was…