Confirmatory factor analysis was used to test 3 models of the Wechsler Intelligence Scale for Children-III (2-, 3-, and 4-factor conceptualizations) for 11 age groups with 200 subjects per age group. The four-factor model is somewhat supported, but its theoretical or clinical importance is unclear. (SLD)

Describes QMaPS (Qualitative Matching and Prediction system for Simulations), a qualitative reasoning system designed to function as a module in exploratory simulation learning environments. Highlights include a hierarchical organization of variables; multilevel relation typology; modeling of physical and conceptual domain structures; an…

Reports research designed to develop a reliable and valid instrument to assess the relationship between locus of control of reinforcement and environmentally responsible behavior in (n=853) undergraduate students. Results suggest that the Environmental Action Internal Control Index can accurately predict environmentally responsible behavior.…

Relations were examined among the CPI Creativity Scale (CPI-CT), the MBTI Creativity Index (MBTI-CI), and the Kirton Adaption-Innovation Inventory (KAI; a style measure of behavioral preference) for samples of 431 to 12,115 managers. KAI scores were related to CPI-CT and MBTI-CI creativity levels. (SLD)

The suggestion that the IDIOSCAL model be fitted by the TUCKALS2 algorithm for three-way components analysis is examined. The claim that resulting coordinate matrices will be identical is supported when the data matrices are semidefinite. Counterexamples for indefinite matrices are also constructed. (SLD)

Reported two studies of the possible relation of knowledge to improvements in recall. Tested 8- to 11-year-old children and college students for knowledge recall before and after they saw videotapes about birds. Although knowledge and memory measures correlated, and most knowledge measures improved after children viewed the videotapes, recall and…

A two-step procedure is developed for the analysis of pretest-posttest data. Nonlinear canonical correlation analysis is followed by covariance analysis of optimally scaled pretest and posttest measures. The procedure is available in the computer program CANALS. Advantages of the two-step procedure are discussed. (SLD)

Holland gives a personal account of how the preceding article was initiated and executed. Origins of the research project, the process of statistical analysis, preparation of the final article, and advice for beginning researchers are included. (SK)

Monte Carlo methods were used to evaluate the degree to which canonical function and structure coefficients may be differentially sensitive to sampling error. For each of 64 research situations, 1,000 random samples were drawn. Both sets of coefficients were roughly equally influenced; some exceptions are noted. (SLD)

In 2 studies with 85 and 88 undergraduates, respectively, peripheral nerve conduction velocity (NCV) was significantly correlated with IQ score and reaction times, and NCV and reaction time contributed significantly, in combination, to prediction of IQ. Results are interpreted in terms of a neural efficiency model of intelligence. (Author/SLD)

Kendall's Tau is often considered equivalent to Spearman's Rho as an ordinal measure of correlation in spite of its different metric. Formulas for converting Tau to Rho are reviewed; and a table of corresponding values is presented for Tau, Rho, and several related indices. (SLD)

Examines whether behavioral intentions (BI) mediate between attitudes (A) and behaviors (B). Finds A-BI correlation higher than A-B correlation, BI-B correlation higher than A-B correlation, A-BI correlation higher than BI-B correlation, variation in BI-B correlations greater than A-BI, and attitudinal relevance affected the magnitude of A-BI…

This study of 335 students in grades 2-6 found that correlations between oral reading fluency and 2 reading achievement tests declined as grade level increased. Coefficients between performance on maze tasks and achievement tests did not show a similar decline from lower to upper grade levels. (Author/JDD)

The implications of serially correlated effects on the results of generalizability analyses are discussed. Simulated data are provided that demonstrate the biases that serially correlated effects introduce into the results. Serial correlation in measurement effects can have a marked influence on the impression of the dependability of measurement…

A modified "F" test is derived that includes a correction for nonindependence of between-groups and within-groups sample values in analysis of variance (ANOVA) designs. Computer simulations based on normal and nonnormal distributions illustrate the usefulness of the approach, which was more powerful than conventional within-subjects…