Provides a nontechnical explanation of the family of multivariate statistical techniques known as multidimensional scaling (MDS). Explains the purpose of MDS, and the advantages of using these techniques in the study of musical perception. Discusses two approaches to the interpretation of MDS solutions. Lists examples of musical studies using MDS.…

Responds to Donald Dean Morley's reply (same issue). Discusses his claims about the use of multiple-message designs, the analysis of multiple-message designs, and generalization on logical grounds. (MS)

A method is presented for determining sample size that will achieve a pre-specified bound on confidence interval width for the interrater agreement measure "kappa." The same results can be used when a pre-specified power is desired for testing hypotheses about the value of kappa. (Author/SLD)

Recognizes some of the limitations of the field of behavioral genetics, but argues that the methods employed in multivariate behavior genetics and developmental behavior genetics have become the dominant paradigms in the field. (MDM)

Supports Gottlieb's conclusion that developmental behavior genetics is unsuitable for analyzing developmental coactional processes because it does not concern itself with mechanisms through which genotypes are transformed into phenotypes. But maintains that modern behavior genetics provides an indispensable tool to analyze nonlinear epigenetic…

Presents situations in which researchers can use the general linear model to uncover reasons for discrepant effect-size results of meta-analysis of similar studies. Situations include similarly labeled treatments or participants differing in important ways, treatment effectiveness varying by subject aptitude or situational variables, research…

Over the 17 years since a previous review by 2 of the present authors, the field of clinical neuropsychology has made advances in techniques, theoretical constructs, and statistical models. With careful attention to methodological issues and underlying concepts and hypotheses, the field will continue to thrive. (SLD)

Presents procedures for reducing attrition in clinical research and provides a case study for examination by researchers. Includes lists of preventative strategies and statistical methodologies to reduce attrition and bias. Argues that early planning for attrition by adjusting sample sizes is a scientifically sound approach to clinical research…

The present paper reviews the techniques commonly used to correct an observed correlation coefficient for the simultaneous influence of attenuation and range restriction effects. It is noted that the procedure which is currently in use may be somewhat biased because it treats range restriction and attenuation as independent restrictive influences.…

This paper addresses several issues in quantitative research that educational researchers should examine with more care. While the purposes of experimentation is to determine causality, the study of causal relations is difficult and problematic. Computational and conceptual errors in statistical analysis seem limited only by the creativity of the…

After the terms "qualitative research" and "quantitative research" are defined, this paper considers why it makes sense to integrate these approaches, at least under some circumstances. This discussion necessitates attention to the issue of whether quantitative and qualitative research are inextricably linked to incompatible…

A correction of the standard F-ratio for unreliability of the dependent measure has recently been proposed by Winne; the rationale is analogous to that of correcting a correlation for attenuation. However, there are two problems associated with Winne's correction of which potential users should be aware. First, the corrected statistic, F*, has…

An equation was derived to determine the relationship between the pooled within-subgroup r (correlation coefficient) and the r obtained from the total group data. It was, thus, possible to assess the amount of distortion introduced by pooling heterogeneous subgroups. As a basis for deciding whether to pool two subgroups in order to calculate a…

The problems of two way analysis of variance designs with unequal and disproportionate cell sizes are discussed. A variety of solutions are discussed and a new solution is presented. (JKS)

Presents observations of a researcher on state of educational research. States that some issues and questions have not changed in 50 years. Cites the arguments over the difference between basic and applied research, and the hereditary basis of intelligence. Concludes with remarks about inappropriate data analysis, the use of technology, and the…