We examined the mean effect of teachers' use of data-based individualization (DBI) on the performance of students with intensive learning needs across academic areas and factors influencing the effects of DBI on student achievement. A total of 57 effect sizes from 14 studies were categorized into two comparisons: DBI Only (comparisons between DBI…

The purpose of this article is to describe a 40+ year journey during which researchers have endeavored to design and evaluate an integrated, empirically based reading intervention for secondary students and to chronicle the lessons learned as well as suggest future directions for this type of work. Initial development of the intervention began in…

This meta-analysis synthesized research on math performance outcomes for English learners (EL) as a function of language-focused (math vocabulary) interventions. We included group and single-subject design studies with children from kindergarten to 8th grade (3,766 students for group, 30 for single-subject). Group studies yielded a mean Hedges' g…

Students with Attention Deficit Hyperactivity Disorders (ADHD) frequently experience significant difficulty mastering basic academic skills. This meta-analysis focuses on one specific potential area of learning difficulties for these students: namely, writing. To identify the extent and depth of the potential writing challenges faced by students…

We reviewed eight studies that described learning differences between students with learning disabilities (LD) and students with mild mental retardation (MMR). A total of 639 students, 6-20 years old, participated in these studies. Study authors examined students' inductive reasoning and their performance during guided inquiry and more lengthy…