Provides a set of guidelines for evaluating research using structural equation modeling (SEM). Offers insight into how someone familiar with SEM would judge the adequacy of a study using such methods. (Author/RH)

This study identified the most productive reviewing journals for newly published business management titles. Two assumptions were shown to be supported by the data: a small core of journals carry the greatest number of reviews and a few monographs are reviewed repeatedly but the majority rarely or not at all. (Author/EM)

This study determined through psychophysical comparison of scaling data that speech naturalness judgments of stutterers and nonstutterers from audiovisual recordings form a metathetic (or qualitative) rather than prothetic (or quantitative) continuum. Both direct magnitude estimation and equal-appearing interval scaling were valid, but interval…

Supplemental Educational Services (SES), a component of the No Child Left Behind (NCLB) Act, provides free tutoring to economically disadvantaged children who are attending Title I schools in their 2nd or more years of school improvement. This research evaluated SES in Tennessee to determine the: (a) impacts on student achievement, and (b)…

In his early exposition of path analysis, Duncan (1966) noted that the method "provides a calculus for indirect effects." Despite the interest in indirect causal effects, most users treat them as if they are population parameters and do not test whether they are statistically significant. Sobel (1982) has recently derived the asymptotic…

The article describes procedures employed for the quantitative synthesis of single-subject research literature in special education. The need for objective, systematic review procedures is noted; previous approaches are reviewed; and the authors' approach (which makes use of overlapping data across phases as an outcome metric) is outlined.…

An evaluation of the "Percentage of Nonoverlapping Data" approach for quantifying outcomes of single-subject research in special education reveals that it is potentially too sensitive to atypical baseline data, not powerful enough to discriminate important treatment differences, and adversely affected by even subtle trends in the data.…

The response to a critique of a proposed method of quantifying outcomes of single-subject research in special education suggests that the alternative procedure proposed has theoretical but not practical merit due to the limited number of observations typically found in single-subject baselines. (Author/DB)

The method of using the percentage of nonoverlapping data points to summarize and synthesize single-subject research in special education was applied to six specific studies. The method was found lacking for such reasons as its failure to identify patterns across time or vital idiosyncrasies in behavior within and across studies. (Author/DB)

The response to a critique of a proposed method of quantitatively synthesizing single subject research in special education reaffirms the authors' view that narrative review procedures are of limited utility without objective standards for evaluating study outcomes. (DB)

In response to Hallahan et al, the authors suggest that variability in prevalence is a function of the methods used to examine prevalence differences and that the effect specific discrepancy criteria for learning disabilities have on the number of students identified is the critical issue. (Author/DB)

Demonstrates ways in which conclusions about models may be affected by violations of the assumption that the observed variables are normally distributed. Addresses the issue of the robustness of findings obtained under such conditions. (Author/RH)

Proposes an alternative methodology for handling queries with weighted search terms or search criteria in a fuzzy environment as a means of improving the performance of information retrieval systems. (EM)

Results of an investigation designed to determine whether the impact factor or the immediacy index--two derivative measures of citation analysis--provide useful insights into qualitative relationships among scientific journals indicate that neither measure is significant. (MBR)

The paper reviews a series of models designed to reduce bias in the assessment process and describes the intent of each model and their interactive effect in the process of nonbiased educational evaluation. (Author/CL)