This paper reviews the research literature regarding the importance of Witkin's theory of psychological differentiation, particularly the research on measures of field independence using perceptual disembedding tasks. The first phase of development of a multiple-choice perceptual disembedding measure, the Finding Embedded Figures Test, is…

Discusses features of a microcomputer program, SCOREIT, used at New Orleans' Loyola University and several high schools to score and analyze test results. Benefits and dimensions of the program's automated test and item analysis are outlined, and several examples illustrating test and item analyses by SCOREIT are presented. (MBR)

Multivariate normality is required for some statistical tests. This paper explores the implications of violating the assumption of multivariate normality and illustrates a graphical procedure for evaluating multivariate normality. The logic for using the multivariate bootstrap is presented. The multivariate bootstrap can be used when distribution…

Effect sizes have been increasingly emphasized in research as more researchers have recognized that: (1) all parametric analyses (t-tests, analyses of variance, etc.) are correlational; (2) effect sizes have played an important role in meta-analytic work; and (3) statistical significance testing is limited in its capacity to inform scientific…