Factor pattern of test items and tests as a function of the correlation coefficient: Content, difficulty, and constant error factors Robert J. WherryRichard H. Gaylord OriginalPaper Pages: 237 - 244
The interpretation of a test validity coefficient in terms of increased efficiency of a selected group of personnel Marion W. Richardson OriginalPaper Pages: 245 - 248
Mathematical analysis in psychology of education: Computation of stimulation, rapport, and instructor's driving power Michael A. Sadowsky OriginalPaper Pages: 249 - 256
“Parallel proportional profiles” and other principles for determining the choice of factors by rotation Raymond B. Cattell OriginalPaper Pages: 267 - 283
