Review teams tested the systematic review procedures and principles developed under the Campbell Collaboration Fourteen review teams selected topics for intervention reviews in social policy, education, and criminal justice. Review protocols gave criteria for the extensive research literature search. Randomised Controlled Trials were selected.…

Since the early 1970s, many educators have touted writing as a means of enhancing learning. Several reasons have been suggested for this purported enhancement: that writing is a form of learning, that writing approximates human speech, that writing supports learning strategies. Alternatively, some researchers have cautioned that the educative…

The study of federal education initiatives that takes place over multiple years in multiple settings often calls for aggregating and comparing data-in particular, student achievement data-across a broad set of schools, districts, and states. The need to track the trends over time is complicated by the fact that the data from the different schools,…

Meta-analysis aggregated results of 40 investigations involving 2,867 children who averaged 29.6 ("SD" = 8.6) months of age when their attachments to care providers were assessed using either the Strange Situation (SS) or the Attachment Q-Set (AQS). As opposed to parents, secure attachments to nonparental care providers were less likely (using SS)…

Functional magnetic resonance imaging (fMRI) and event-related potential (ERP) experiments were conducted in the same group of subjects and with an identical task paradigm to investigate a possible relationship between hemodynamic and electrophysiological responses within the brain. The subjects were instructed to judge whether visually presented…

This meta-analysis investigates differences between the effect sizes of physical punishment and alternative disciplinary tactics for child outcomes in 26 qualifying studies. Analyzing differences in effect sizes reduces systematic biases and emphasizes direct comparisons between the disciplinary tactics that parents have to select among. The…

In this article, I respond to comments made by K. Salzinger and A. Aleman and A. S. David on my original article. The constructive, reconstructive, and interpretive nature of human cognition is well illustrated by these two responses to my recent article on schizophrenia. In the original article, I used meta-analytic summaries of the published…

Clinical predictions made by mental health practitioners are compared with those using statistical approaches. Sixty-seven studies were identified from a comprehensive search of 56 years of research; 92 effect sizes were derived from these studies. The overall effect of clinical versus statistical prediction showed a somewhat greater accuracy for…

The overlap between measures of work-to-family (WFC) and family-to-work conflict (FWC) was meta-analytically investigated. Researchers have assumed WFC and FWC to be distinct, however, this assumption requires empirical verification. Across 25 independent samples (total N=9079) the sample size weighted mean observed correlation was .38 and the…

Twenty peer-reviewed journal articles that described outcomes of interventions that took place in school settings and either focused on anger or included anger as a dependent variable were meta-analyzed. No differences in outcomes were found for group comparisons by school setting, special education status, entrance criteria, or treatment agents.…

A responsiveness-to-intervention (RTI) approach to diagnosing LD is a leading alternative to current practice. This study conducted a meta-analytic review of research on four existing large-scale RTI models and other models implemented for research. Twenty-four effect sizes and unbiased estimates of effect (UEE) were computed. Results found a…

Meta-analysis is often assumed to be the sine qua non of quantitative research. However, face validity of published meta-analyses in emotional or behavioral disorders (E/BD), as in other areas, can be substantially impacted by the information supplied. The quality of information reported, therefore, can also have important implications for theory…

The H. Bosch, F. Steinkamp, and E. Boller (see record 2006-08436-001) meta-analysis reaches mixed and cautious conclusions about the possibility of psychokinesis. The authors argue that, for both methodological and philosophical reasons, it is nearly impossible to draw any conclusions from this body of research. The authors do not agree that any…

This report uses meta-analytic methods to reexamine a body of research literature on comparative levels of divorce and marital satisfaction/discord in parents of children with and without developmental disabilities in light of new assumptions about variability in family adjustment, including successful family adaptation and longterm resilience. A…

This paper provides results of a descriptive analysis of peer-reviewed, single subject design, intervention research on augmentative and alternative communication (AAC) for individuals with severe disabilities, from birth to 21 years, published in English between 1997 and 2003. A database of 40 studies was found that met seven specified criteria.…