The Hubbard and Ryan article is a little ingenuous in its implications for action. Both meta-analyses and replication have problems of their own; each requires careful attention. Good measurement emphasizes proper sampling techniques and using whatever means possible to analyze data. (SLD)

Agrees with R. Hubbard and P. Ryan that statistical significance testing has had a negative impact in that some users have closed their minds to alternative approaches to conducting research. In marketing, the alternatives are not completely satisfactory, however, and researchers are likely to continue to rely on statistical significance testing.…

Summarizes a meta-analysis of published research on dynamic assessment that reviewed 30 studies (170 effect sizes). Discusses factors that impact effect size, including the predictive ability of type of assessment for effect size. Discusses results in the context of assumptions related to dynamic assessment. (SLD)

The meta-analysis of coefficient alpha across many studies is becoming more common in psychology by a methodology labeled reliability generalization. Existing reliability generalization studies have not used the sampling distribution of coefficient alpha for precision weighting and other common meta-analytic procedures. A framework is provided for…

A meta-analysis of the available judgment and memory data on the sleeper effect in persuasion is presented. According to this effect, when people receive a communication associated with a discounting cue, such as a noncredible source, they are less persuaded immediately after exposure than they are later in time. Findings from this meta-analysis…

This article provides a critical review of the assumptions and findings of studies used to establish psychotherapies as empirically supported. The attempt to identify empirically supported therapies (ESTs) imposes particular assumptions on the use of randomized controlled trial (RCT) methodology that appear to be valid for some disorders and…

One version of r-sub(equivalent), calculated from Fisher's exact test p values and recommended for small samples, is considered "a more realistic... [and] a more accurate estimate of the population correlation than... the sample correlation, r-sub(sample)" (R. Rosenthal & D. B. Rubin, 2003, p. 494). Small sample properties of r-sub(sample) and of…

This article discusses meta-analysis in the context of research in gifted education. It provides the rationale for encouraging meta-analytic reviews, rather than narrative reviews, to synthesize the research in a given area. The article summarizes the results of reported meta-analyses retrieved from electronic databases and provides guidelines for…

Early developmental prevention involves interventions designed to prevent the development of criminal potential in individuals, especially those that target risk and protective factors, in the early years of the life course. Developmental prevention is considered one of the major strategies in preventing delinquency and later offending. There is…

The purpose of this study is to compare attitudes toward inclusion among general education (GE) and special education (SE) teachers. Between 1997 and 2007, many changes took place within the Individuals with Disabilities Act and in 2002 the introduction of No Child Left Behind. This meta-synthesis examines the teacher's attitude towards inclusion.…

Since the 1960s, there have been continuing federal efforts to bring reform to scale in high-poverty elementary and secondary schools across the U.S. This paper traces the evolution of these efforts and discusses their impacts on achievement outcomes. Drawing on evidence from meta-analyses of the Title I evaluation literature and the Comprehensive…

For schools, creating an appropriate learning environment is critical. Edwards (2008) said "an improper learning environment strikes at the heart of the school's purpose" (p. 1). School discipline is extremely important because positive strong learning conditions are critical to student success and disciplinary problems are a continual…

This is a summary of 300 plus studies from Marzano Research Laboratory (MRL) on instructional strategies. This report synthesizes a series of action research projects conducted between the fall of 2004 and the spring of 2009. The data used for analysis can be found in MRL's Action Research Meta-Analysis Database. Appended are: (1) Instructions for…

The developing discourse which moves assessment away from a measurement model towards one of learner empowerment and the development of assessment for lifelong learning sets the context for this paper. Within this framework, we explore how the demands made on practitioners may influence current reported assessment practices. The reasons given by…

Language learners have unprecedented opportunities for developing second language literacy skills and intercultural understanding by reading authentic texts on the Internet and in multimedia computer-assisted language learning environments. This article presents findings from a meta-analysis of 11 studies of computer-mediated glosses in second…