Suggests that replication research and meta-analysis are not substitutes for statistical significance testing, but rather, like measures of effect size, they are complements to statistical significance testing. Significance testing does provide a means for determining what might be usefully replicated. (SLD)

Proposes and illustrates a new method by which "what if" analyses can be conducted using estimated true population effects. Use of these "what if" methods may prevent authors with large sample sizes from overinterpreting their small effects once they see that the small effects would no longer have been statistically significant with only a…

Shows why the two-step approach proposed by D. Robinson and J. Levine (1997) is inappropriate for the evaluation of empirical results and reiterates the preferred approach of increased sample size and the computation of confidence intervals. (SLD)

Supports a two-step approach to the estimation and discussion of effect sizes, making a distinction between single-study decision-oriented research and multiple-study synthesis. Introduces and illustrates the concept of "conclusion coherence." (Author/SLD)

Many older adult have an interest in learning to use computers. The study reported in this article examined whether older adults' attitudes toward computers can be influenced by direct, customized computer training. Thirty older participants who registered for introductory computer courses offered at a SeniorNet computer lab completed the…

In order to determine the effects of gender and scholastic ability on vocabulary retention and reading comprehension in a foreign language, 181 men and women enrolled in a first-year Spanish course were asked to either read a passage in Spanish on a computer and create annotations for a list of words found in the passage (experimental group), or…

Discusses criticisms of null hypothesis significance testing (NHST), suggesting that historical use of NHST was reasonable, and current users should read Sir Ronald Fisher's applied work. Notes that modifications to NHST and interpretations of its outcomes might better suit the needs of modern science. Concludes that NHST is most often useful as…

This note shows that the dynamics of the dispersion of educational attainment across OECD countries in the period 1960-1990 differ enormously depending on the dataset used, as do the results of the test of significance in the change of the cross-country standard deviation of schooling years between subperiods. The three datasets studied (the…

The objective of this report is to review studies that report language and literacy outcomes associated with preschool curriculum-based interventions. Results from studies reporting on interventions targeting preschool children from low-income families were included regardless of the specific type of program. Although the majority of preschool…

Effectiveness was operationalized as a combination of successful developmental course completion, high student satisfaction at the end of the course, and high academic achievement in a subsequent college-level math course. Instructional methodologies were similar to the extent that the instructional delivery systems allowed. With a sample size of…

This report describes the findings of an analysis of a series of action research projects conducted by Goshen Community Schools at the elementary school level. During the 2008-2009 school year, 26 teachers at 7 elementary schools participated in independent action research studies regarding the extent to which a six step approach to direct…

This report describes the findings of an analysis of a series of action research projects conducted by Goshen Community Schools at the middle school level. During the 2008-2009 school year, six teachers at Goshen Middle School participated in independent action research studies regarding the extent to which a six step approach to direct vocabulary…

This report describes the findings of an analysis of a series of action research projects conducted by Goshen Community Schools at the high school level. During the 2008-2009 school year, eight teachers at Goshen High School participated in independent action research studies regarding the extent to which a six step approach to direct vocabulary…

The purpose of this study was to examine and compare the perceptions of undergraduate and graduate students of a selected state university in Texas attending the Multi Institutional Teaching Center (MITC)/The University Center (TUC) or the main campus regarding the effectiveness of student services. As universities face limited resources and…

Purpose: It is widely believed that physical restraint use causes mental and physical health decline in nursing home residents. Yet few studies exist showing an association between restraint initiation and health decline. In this research, we examined whether physical restraint initiation is associated with subsequent lower physical or mental…