A meta-analysis of 21 instructional treatments aimed at enhancing the skill of deliberately deriving word meaning from context during reading shows a medium effect size of 0.43 standard deviation units. Exploratory multilevel regression shows that clue instruction appears more effective than other instruction types or practice alone. (Author/SLD)

This meta-analysis reviews experimental and quasi-experimental studies in which students learned by constructing, modifying, or viewing node-link diagrams. Following an exhaustive search for studies meeting specified design criteria, 67 standardized mean difference effect sizes were extracted from 55 studies involving 5,818 participants. Students…

This article finds the empirical review of the intellectual effects of family factors by Lala Carr Steelman wanting because (1) it is selective and incomplete; (2) it ignores systematic aggregate effects; (3) it imposes linear analysis on nonmonotone relationships; and (4) it disregards most of the confounds identified by Steelman as crucial.…

The author responds to criticism by R. B. Zajonc on a review of the extant literature on the intellectual consequences of sibship size and birth order. (Author/LMO)

nter arguments are presented to defend the author's data selection practices and to point out pitfalls in Baker's critique. (SLD)

Teachers and researchers can learn more about mastery learning by looking at the full picture instead of the small area on which R. E. Slavin focuses. Effects on precollege examinations constitute only a small part of the story; the larger literature presents many examples of its effectiveness. (SLD)

Six quantitative reviews of the research on student ratings of instructional effectiveness are examined. The disparate conclusions of the reviews are explained by comparing the syntheses at each of five steps in a meta-analysis: specifying inclusion criteria; locating studies; coding study features; calculating study outcomes; and data analysis.…

Meta-analytic results reported show that in selected examples, mathematics-space correlations are higher in females than in males, with the difference becoming more pronounced with greater selectivity. Because these samples are of gifted or college-bound youth, explanations that emphasize career-directed attitudes are suggested. (SLD)

In program evaluation and policy analyses, utility supplants rigor as the first and most important criterion in judging literature reviews. Although R. T. Ogawa and B. Malen emphasize rigor, a utilization-focused evaluation emphasizes purpose and audience, both of which affect the conduct of a multivocal literature review. (SLD)

Reviews of multivocal literature are assessments of what can be learned from a given body of literature and assessments of the claims on which that knowledge is based. Methodological rigor is less likely to be a problem in such reviews than is lack of independent judgment. (SLD)

This article synthesizes published literature comparing the cognitive functioning of children who have math disabilities (MD) with that of (a) average-achieving children; (b) children who have reading disabilities (RD); and (c) children who have co-morbid disabilities (MD+RD). Average achievers outperformed children with MD on measures of verbal…

Schools and districts are adopting out-of-school-time (OST) programs such as after-school programs and summer schools to supplement the education of low-achieving students. However, research has painted a mixed picture of their effectiveness. To clarify OST impacts, this synthesis examined research on OST programs for assisting at-risk students in…

To identify variables influencing the acquisition of teaching skills, 26 studies addressing the acquisition of the generic skill of questioning were synthesized through meta-analysis. The training variables considered include general effect, method, duration, number of sessions, experience and academic certification levels of trainees, and…

Review of research of between-class and within-class ability grouping on the achievement of elementary students. Ability grouping appears most effective for specific subjects with students remaining in heterogeneous classes most of the day. Cross-grade assignment for selected subjects can increase achievement. (SLD)

Slavin's 1987 review of research of between- and within-class ability grouping on achievement of elementary students is discussed, and its assumptions examined. It is suggested that recent theory and research make the Slavin review most useful from the perspective of historical analysis. (SLD)