A meta-analysis of 16 subjective and objective sleep studies with a sample of 722 children with attention deficit hyperactivity disorder (ADHD) versus a control that numbers 638 shows that the children with ADHD are significantly more impaired in most of the subjective and some of the objective sleep measures than their counterpart.

Objective: The sexually abused-sexual abuser hypothesis states there is a specific relationship between sexual abuse history and sexual offending, such that individuals who experience sexual abuse are significantly more likely to later engage in sexual offenses. Therefore, samples of adult sex offenders should contain a disproportionate number of…

Academic libraries routinely negotiate layers of change as embedded organizations in higher education institutions. Facing competing demands with limited resources gave rise to the question: how do academic library deans effectively lead their organizations in times of change? A Delphi Method study was conducted to identify successful leadership…

Since its origin in the late 1970s and early 1980s, achievement goal theory has provided significant contributions to the research and practice in education and psychology. The theory has been considered to be an influential framework for conceptualizing student motivation. The term motivation refers to the interaction dynamics of many factors in…

The main objective of this review was to provide a quantitative and methodologically sound evaluation of existing treatments for bereavement and grief reactions in children and adolescents. Two meta-analyses were conducted: 1 on controlled studies and 1 on uncontrolled studies. The 2 meta-analyses were based on a total of 27 treatment studies…

This article seeks to explain the ways in which leadership makes a difference to the quality of instruction in US schools by reviewing research published since 2000. The review of research is presented in three major sections, organised according to the methodology used in each study. The first section looks into quantitative studies that probe…

Are motor coordination deficits an underlying cardinal feature of Autism Spectrum Disorders (ASD)? Database searches identified 83 ASD studies focused on motor coordination, arm movements, gait, or postural stability deficits. Data extraction involved between-group comparisons for ASD and typically developing controls (N = 51). Rigorous…

The Sustained Attention to Response Task (SART) is a widely used tool in cognitive neuroscience increasingly employed to identify brain regions associated with failures of sustained attention. An important claim of the SART is that it is significantly related to real-world problems of sustained attention such as those experienced by TBI and ADHD…

This article reviews the research literature and theory concerned with accuracy of judgments in romantic relationships. We initially propose a model of cognition in (romantic) relationships that distinguishes between 2 forms of accuracy: mean-level bias and tracking accuracy. We then report the results of meta-analyses of research on heterosexual,…

A meta-analysis found that attending full-day (or all-day) kindergarten had a positive association with academic achievement (compared to half-day kindergarten) equal to about one quarter standard deviation at the end of the kindergarten year. But the association disappeared by third grade. Reasons for this fade-out are discussed. Social…

This article summarizes "Developing Early Literacy: Report of the National Early Literacy Panel," which was published in 2008.That report provides an extensive meta-analysis of approximately 300 studies showing which early literacy measures correlate with later literacy achievement. It also provides a series of meta-analyses of a comprehensive…

In the last two decades research on the neurophysiological processes of creativity has found contradicting results. Whereas most research suggests right hemisphere dominance in creative thinking, left-hemisphere dominance has also been reported. The present research is a meta-analytic review of the literature to establish how creative thinking…

In this article we reply to C. J. Ferguson and J. Kilburn's (2010) critique of our meta-analysis on violent video game effects (C. A. Anderson et al., 2010). We rely on well-established methodological and statistical theory and on empirical data to show that claims of bias and misinterpretation on our part are simply wrong. One should not…

Because of being a developed country which is a phenomenon among the countries in the world, this desire inevitably has contributed the scientific and technological developments in educational areas as well. The expectation of these scientific and technological changes reflections in teaching areas to form permanent learning has developed the use…

Background: A meta-analysis examined the effects of deinstitutionalisation on adaptive behaviour outcomes in persons with intellectual disability. The need for an updated review in this area is reflected by recent policy shifts in community care practices and the international status of deinstitutionalisation efforts. Method: Twenty-three studies…