Many studies over the last 20--25 years have examined the benefits of mentoring for the protege and the organization. A review of these studies being published revealed that there is not only a lack of studies utilizing or reporting comparison group information but also a general lack of experimental research about mentoring. This quantitative…

The authors investigated the effect of chronic exercise on feelings of energy and fatigue using meta-analytic techniques. Chronic exercise increased feelings of energy and lessened feelings of fatigue compared with control conditions by a mean effect delta of 0.37. The effect varied according to the presence or absence of a placebo control or…

Meta-analyses of studies yielding sex-specific risk of potentially traumatic events (PTEs) and posttraumatic stress disorder (PTSD) indicated that female participants were more likely than male participants to meet criteria for PTSD, although they were less likely to experience PTEs. Female participants were more likely than male participants to…

Background: Attention deficit/hyperactivity disorder (ADHD) is one of the most prevalent and commonly studied forms of psychopathology in children and adolescents. Causal models of ADHD have long implicated dysfunction in fronto-striatal and frontal-parietal networks supporting executive function, a hypothesis that can now be examined…

The performance of methods for detecting publication bias in meta-analysis was evaluated using Monte Carlo methods. Four methods of bias detection were investigated: Begg's rank correlation, Egger's regression, funnel plot regression, and trim and fill. Five factors were included in the simulation design: number of primary studies in each…

A meta-analysis in the form of Brinley plots was conducted on the mean reaction times of Attention Deficit Hyperactivity Disorder (ADHD) and Control groups of children and adolescents on the Stroop Color and Word Test (SCWT). ADHD reaction times were regressed on Control group reaction times for 17 data sets (accessed from 13 published studies).…

Serious sequelae of youth depression, plus recent concerns over medication safety, prompt growing interest in the effects of youth psychotherapy. In previous meta-analyses, effect sizes (ESs) have averaged 0.99, well above conventional standards for a large effect and well above mean ES for other conditions. The authors applied rigorous analytic…

Meta-analytic research of experiments conducted on the effects of native-language (L1) glosses on second-language (L2) reading comprehension have revealed a significant difference between groups of studies with traditional and computer-assisted L1 glosses. This means that learners provided with L1 glosses comprehend significantly more…

The evaluation of systematic review as part of the evidence-based or evidence-informed practice movement is a dominant theme in current debates in educational research. This article contributes to the debate by offering a personal, reflexive narrative on the process of doing systematic review, relating some of the arguments regarding the merits…

We reviewed nine studies in which children's cortisol levels at center daycare were assessed. Our first hypothesis, concerning intraindividual differences in cortisol levels across home and daycare settings, was also tested in a meta-analysis. Our main finding was that at daycare children display higher cortisol levels compared to the home…

Extended the findings from previous meta-analytic work by comparing the effectiveness of behavioral parent-training (BPT) and cognitive-behavioral therapy (CBT) for youth with antisocial behavior problems. Youth demographic variables were also examined as potential moderators of the effectiveness of these 2 types of interventions. Thirty BPT…

A review of the empirical research literature on Social Stories[TM] is presented, including a descriptive review and single-subject meta-analysis of appropriate studies. Examination of data suggests the effects of Social Stories[TM] are highly variable. Interpretations of extant studies are frequently confounded by inadequate participant…

Conceptual Foundations are the theoretical, conceptual, philosophical, and historical aspects; perspectives from outside the field; trends, issues, and future directions; and social, political, and economic facets that underlie our field. This paper attempted to capture these foundational aspects, taking stock of accomplishments and suggesting…

The widespread problem of substance abuse negatively affects users and their families. This paper provides a methodological review of empirical studies that focused on systemic interventions (particularly marital and family therapy) in the treatment of substance abuse. The articles examined here focused on engaging the addict in treatment,…

As a predominant research method, the mail survey has been the subject of a considerable body of research. Several major reviews of research have been published that attempt to synthesize findings of empirical studies and identify techniques that stimulate responses. The review articles are examined, identifying procedures and potential…