Samples in research on individual and group differences may be selected based on whole scores which differ from the population mean. Children are diagnosed in clinical practice with a whole score. These procedures produce regression to the population mean which can affect accuracy and adequacy of part score interpretations. (Author/DWH)

The purpose of this report is to describe a process for creating unique multiple linear regression problems for each student. Three formulas were utilized to define intercorrelations between variables. (Editor)

Whether one should use null hypothesis testing, confidence intervals, and/or effect sizes is a source of continuing controversy in educational research. An alternative to testing for statistical significance, known as equivalence testing, is little used in educational research. Equivalence testing is useful in situations where the researcher…

Reports on methods devised to test the strategic-contingencies theory of intraorganizational power which hypothesizes that the power of subunits results from contingent dependences among them created by unspecified combinations of coping with uncertainty. (Author)

Results in this study suggest that it is possible to use performance on a moderator or predictability scale to select a subgroup for whom correspondence between two predictors and the criterion is much greater than that of a subgroup whose scores on the moderator indicate a lesser degree of correspondence. (Author/ES)

Multiple discriminant function analysis is used to locate differences in inventoried interests among a selected engineering sample. This technique is an effective statistical procedure for discriminating among occupational groups where data similar to that analyzed in the article are available. (Author/CK)

Contains a solution for the multidimensional scaling of pairwise choice when individuals are represented as dimensional weights. The analysis supplies an exact least squares solution and estimates of group unscalability parameters. (DG)

Directions are provided for the construction of a reduced size Rod and Frame Test. Simpler and less expensive, the proposed apparatus has criterion validity parallel to that of the full-sized. (GS)

A derivation of a formula for the stability coefficient is presented and discussed in terms of test reliability over time. (PR)

Analysis of 18,528 classroom observations attempting to identify factors in the classroom that affect learning experiences of children. (RA)

This article reviews some of the less well-known hypothesis tests for variance, how they are employed, and how the results may be interpreted. Tests include testing for a single variance and the T-test for correlated variances. (CT)

Studied the extent to which job evaluation methods, differing in methodology, and presently used in South Africa, would in fact supply similar classifications. Correlation coefficients among the 16 participating organization job evaluation point ratings indicated high agreement among methods, irrespective of job type and level within the…

Setting a cutting score is a key problem in criterion-referenced measurement which is discussed within a decision theoretic approach when just one student is considered. A minimum information solution is given and compared with approaches when there is information about a group of students. Formulas illustrate the discussion. (CM)