Used meta-analysis to study the clinical significance of psychotherapy for symptoms of unipolar depression, using the Beck Depression Inventory. Results indicated that psychotherapy produces outcomes of moderate clinical significance which are well-maintained at follow-up, that individual therapy is associated with greater clinical significance…

Twenty-four empirical investigations of tutoring interventions with learning disabled students were evaluated. Although all authors favored tutoring, equivocal results were reported with few substantiated reports of social benefits to tutors or tutees. Methodological problems associated with such research in field settings are identified. A chart…

Differences between father-absent and father-present samples were not large. Although study quality was not the best predictor of outcome, the best-quality studies produced nonsignificant estimates of effect size. Most effect-size estimates were less than .5; many were much smaller. (RH)

Meta analyses were conducted of computer assisted instruction, computer managed instruction, and computer enriched instruction. Positive effects were usually reported, with variations according to instructional type and age level. Results also indicated that effects varied according to the evaluation design and the type of publication in which the…

Discusses the Matheny et al stress-coping model and analysis of treatment effectiveness, noting the lack of clarity as to the method used by the authors to develop the categories. Concludes by underscoring certain issues, raising several questions, and making a few suggestions in regard to research and treatment issues. (KS)

The use of measures of magnitude of effect has been advocated as a way to go beyond statistical tests of significance and to identify effects of a practical size. They have been used in meta-analysis to combine results of different studies. Describes problems associated with measures of magnitude of effect (particularly study size) and…

The first of 10 papers providing a state of the art of research synthesis in special education, the introduction/overview stresses the importance of applying scientific techniques and standards to the evaluation and summarization of substantive research findings. (DB)

The paper proposes a statistical methodology for synthesizing single-subject research in special education. A regression model that can be used to generate effect sizes for both changes in slope and changes in level occuring as a result of the treatment intervention is outlined. (Author/DB)

The synthesis of 18 single subject research studies on early intervention for socially withdrawn children indicated that reinforcement and measurement of targeted socially interactive behaviors showed the largest effects, with some treatment (such as unreinforced modeling of behavior) showing little effect. There was little evidence for skill…

A meta-analysis was performed on 11 empirical studies of the effects of mainstreaming. Results indicated that mainstreamed disabled students consistently outperformed nonmainstreamed students with comparable special education classifications. The most success was found in programs with design features (such as continuous assessment) suggested by…

Integrated quantitatively the collective research dealing with the effects of the Intermediate Science Curriculum Study (ISCS) on student performance and attitude. The weighted mean effect size was 0.09, indicating that the performance of ISCS students was 0.09 standard deviations about the performance of students in traditional science courses.…

This study is a synthesis of practice and research related to use of behavior analysis to train teachers. An idealized model for training science teachers is presented with research related to the model categories reviewed and analyzed. Results (based on meta-analysis) which support the idealized model are presented and discussed. (Author/JN)

Meta-analysis of the effects of 11 types of psychologically based organizational interventions showed that such programs raise worker productivity. The strength of effects vary by type of intervention, criterion of productivity, contextual factors in organizations, and features of research design. Also discussed are comparisons of conclusions…

A meta-analysis of 26 studies shows that accelerated gifted students outperform students of the same age and ability who are not accelerated and achieve as well as equally gifted older students in the higher grades. Correlational studies suggest that accelerates are equally successful later in life. (MLF)

A quantitative synthesis of the results from 66 studies indicated that boys' and girls' science achievement is positively related to affect, but the relationship is weaker than expected. Science achievement correlates more strongly with cognitive abilities than with affect. (Author/BW)