In response to research questioning the utility of the Jesness Inventory in predicting and differentiating delinquency, this study isolated the personality dimensions of 422 adjudicated, noninstitutionalized adolescents by item level factor analysis. The resulting three factors--Mistrust, Social Pessimism, and Hypersensitivity--were compared with…

Various person reliability coefficients, including within- and between-occasion consistency measures, were investigated using the test and retest responses of 123 undergraduates on the Basic Personality Inventory (BPI). Results indicate person reliability may be a multidimensional concept, and that certain item consistency measures are confounded…

Three numerical coefficients for analyzing the validity and reliability of ratings are described. Each coefficient is computed as the ratio of an obtained to a maximum sum of differences in ratings. The coefficients are also applicable to the item analysis, agreement analysis, and cluster or factor analysis of rating-scale data. (Author/BW)

The relation between incorrect option choice and estimated ability level was examined for two widely used aptitude tests, the Scholastic Aptitude Test, and the Graduate Record Examination. Incorrect option choice was found to be related to estimated ability for many items. Implications of these findings are briefly discussed. (Author)

The basic notion of variability is generalized from a univariate context to a multivariate context using two matrix functions, a determinant, and a trace, yielding a number of alternative multivariate indices of shared variation. Some problems in the interpretation of tests of multivariate hypotheses are reviewed. (Author/BW)

Six methods of measuring factorial similarity were compared with regard to outcome based on two large data sets, one for an intelligence test and the other for a personality test. All indexes yielded comparable results. Comparing factors determined at random, all indexes yielded comparable results leading to a conclusion of dissimilarity.…

Alternate forms of the state anxiety (A-State) and trait anxiety (A-Trait) scales of the State-Trait Anxiety Inventory (STAI) were constructed by dividing the 20 items of each scale into two briefer forms having 10 items each. The alternate forms and item statistics are presented. (Author/BW)

A procedure and a computing diagram for assigning score boundaries to grading categories on classroom tests are described. The procedure takes both the median ability level of the class and the test performance of the class relative to that of other classes into account. (Author)

The difference between the success rates in two treatment groups is related to the treatment-outcome correlation and the overall success rate. A new measure of effect size is proposed, which is easily calculated and interpretable in terms of the ratio of success rates in the treatment groups. (Author/BW)

Iterative Intercolumnar Correlation Classification (IICC) computes the correlation coefficients for the entries of every column of a matrix with those of every other column of the matrix. Iteration increases the size and validity of the object indices, reduces error in the indices, and increases homogeneity amongst them. (Author/BW)

The mixed standard scale is a rating format that allows researchers to count internally inconsistent response patterns. This study investigated the meaning of these counts, using 943 accountants as raters. The counts of internally inconsistent response patterns were not related to reliability as measured by Cronbach's alpha. (Author/BW)

A definition of test validity as the ratio of a covariance term to a variance term, analogous to the classical definition of test reliability, is proposed. When error scores on distinct tests are uncorrelated, the proposed definition coincides with the usual one, but it remains meaningful when error scores are correlated. (Author/BW)

A paradoxical phenomenon of decreases in reliability as the number of elements averaged over increases is shown to be possible in multifacet reliability procedures (intraclass correlations or generalizability coefficients). Conditions governing this phenomenon are presented along with implications and cautions. (Author)

A new revision was developed using Rasch psychometric techniques to build a Knox's Cube Test (KCT) variable and item bank using the tapping series from all previous editions. The report forms developed give a clear picture of the subject's performance set in a context that is both normative and criterion. (Author/BW)

The purpose of this study was to determine the concurrent validity of the Learning Ability Profile (LAP) by correlating the results obtained on the LAP with grade point average (GPA). Scores on LAP, both weighted and nonweighted, were correlated .30 and .31, respectively, with GPA. (Author/BW)