This research brief reviews research on why and how family involvement matters for elementary school children's learning and socio-emotional development. Specifically, it summarizes the latest evidence base on effective involvement for elementary school children--that is, the studies that link family involvement in elementary schools to children's…

One of the most popular and often studied topics in the organizational socialization literature is Van Maanen and Schein's [Van Maanen, J., & Schein, E. H. (1979). Toward a theory of organizational socialization. In B. M. Staw (Ed.), "Research in organizational behavior" (Vol. 1), pp. 209-264. Greenwich, CT: JAI Press.] theory of organizational…

Objective: This study examined the extent to which conclusions of published outcome studies contain phrases that could be misconstrued as implying more empirical support than is warranted. Methods: All articles (N = 138) reporting outcome studies from 2000 to 2005 in two social work research journals and two topical database searches were assessed…

The double-deficit hypothesis of developmental dyslexia proposes that deficits in phonological processing and naming speed represent independent sources of dysfunction in dyslexia. The present article is a review of the evidence for the double-deficit hypothesis, including a discussion of recent findings related to the hypothesis. Studies in this…

This meta-analytic review summarizes obesity prevention programs and their effects and investigates participant, intervention, delivery, and design features associated with larger effects. A literature search identified 64 prevention programs seeking to produce weight gain prevention effects, of which 21% produced significant prevention effects…

Traditional reviews and previous meta-analyses of self-concept interventions have underestimated effect sizes by using an implicitly unidimensional perspective that emphasizes global self-concept. In contrast, this research employed a synergistic blend of meta-analysis and multidimensional construct validation to evaluate the impact of…

This meta-analysis examined whether writing about stressful experiences affects health care utilization (HCU) compared with writing on neutral topics or no-writing control groups. Randomized controlled trials of 30 independent samples representing 2,294 participants were located that contained sufficient information to calculate effect sizes.…

In this study, the authors used meta-analytical techniques to examine the relationship between personality and entrepreneurial status. Personality variables used in previous studies were categorized according to the five-factor model of personality. Results indicate significant differences between entrepreneurs and managers on 4 personality…

Criticisms of library and information science (LIS) research abound and most focus on method, in the broad sense. This article examines the discourse on LIS from the standpoint of rhetoric and argument. Rhetorical and argumentative strategies are used in almost all formal communication, and these strategies themselves communicate purpose and point…

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…

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 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…