In this article, the authors outline methods for using fixed and random effects power analysis
in the context of meta-analysis. Like statistical power analysis for primary studies, power …

Summer schools serve multiple purposes for students, families, educators, and communities.
The current need for summer programs is driven by changes in American families and by …

Background In meta-analysis, researchers combine the results of individual studies to arrive
at cumulative conclusions. Meta-analysts sometimes include “grey literature” in their …

Non-randomised studies of the effects of interventions are critical to many areas of
healthcare evaluation, but their results may be biased. It is therefore important to understand …

Research synthesis is the practice of systematically distilling and integrating data from many
studies in order to draw more reliable conclusions about a given research issue. When the …

We used meta‐analysis to review 55 evaluations of the effects of mentoring programs on
youth. Overall, findings provide evidence of only a modest or small benefit of program …

During the past decade, mentoring has proliferated as an intervention strategy for
addressing the needs that young people have for adult support and guidance throughout …

There has been extensive debate among scholars and practitioners concerning whether self-
beliefs influence academic achievement. To address this question, findings of longitudinal …

Ever increasing demands for accountability, together with the proliferation of lists of
evidence-based prevention programs and policies, led the Society for Prevention Research …

ADVANCES IN EXPERIMENTAL Copyright 2004, Elsevier Inc. SOCIAL PSYCHOLOGY,
VOL. 36 All rights reserved. 0065-2601/04 $35.00 games on aggressive behavior, aVect …