Illustrated is the power of multidimensional scaling in reducing a complex set of proximity measures to a simple geometric picture that shows the relationship among data objects. Methods are discussed for determining the number of dimensions needed to represent a set. (Author/DEP)

This paper discusses problems associated with the application of experimental methods to program evaluation, proposes an alternative approach (program-attribute scaling), and reports the procedure and results of a trial application of the alternative approach. (Author)

A scaling technique known as the Method of Reciprocal Averages has been in use since the early 1930's. This technique yields a set of item response weights for a psychological inventory which maximizes the internal consistency of the inventory for a group of subjects. Although the technique has been used for many years, its mathematical…

This material provides a discussion of the construction and analysis of tests prepared for classroom use by teachers. The initial discussion is concerned with the purposes of evaluation and the specification of objectives. This is followed by an examination of theoretical and practical considerations in planning a test. The material on test item…