A meta-analysis of research on the relationship between inspection time (IT) and IQ was performed. The analysis was designed to determine whether a non-zero relationship between IT and IQ exists, estimate the size of this relationship, and test whether IT is ontogenetically related to "g" (intelligence). (TJH)

Clarified efficacy of psychological treatments for insomnia through a meta-analysis of 66 outcome studies representing 139 treatment groups. Psychological treatments produced considerable enhancement of both sleep patterns and the subjective experience of sleep. Participants who were clinically referred and who did not regularly use sedatives…

Identified factors for matching individuals to treatments by surveying experts in the field of obesity about the indications and contraindications of 11 common approaches to weight loss. Experts provided 170 client characteristics as possible matching factors. Discusses potential variables for studies on matching individuals to treatments along…

Evaluated the hypothesis that the apparent superiority of behavioral interventions among children is due to differences in the methodological quality of studies of behavioral and nonbehavioral treatments. Meta-analytic results found little support for this hypothesis. Because meta-analysis is a correlational technique, these results should be…

This overview reviews a program of interlinked cross-sectional and longitudinal investigations of the nature of cognitive development in infants and young children with Down's Syndrome. The research falls into three groupings: object concept studies, operant learning experiments, and IQ studies. Early results suggest a common learning style which…

Reports results of metanalysis of 19 studies on concept mapping (CM) in science instruction. Results showed CM has positive effects on student achievement and attitudes. Differences in achievement depended on science content class, with biology being most favored. Smaller differences in achievement were found when CM groups were compared to a…

Examines meta analysis as a technique for reviewing literature, with a particular focus on the literature of instructional development. An example using meta analyses to study mastery learning is presented, and a summary of meta analytic studies of instructional variable effects on student achievement is included. (38 references) (LRW)

Meta-analytic reviews have shown that gifted students gain little from programs of minimal instructional modification (multilevel classes), more from greater modifications (cross-grade and within-class programs) and the most from those involving the greatest amount of curricular adjustment (enrichment and acceleration). (Author/DB)

A simple statistical model to measure the effects of innovation and schooling is proposed. Synthesis of 134 meta-analyses revealed that educational innovations can be expected to change average achievement by 0.4 standards deviations and affective outcomes by 0.2 standard deviations. Innovation and feedback appear to enhance effects;…

Meta-analysis of 225 hypothesis tests of measures of memory for order (MFO) and the relationship of MFO and measures of general ability demonstrate a significant relationship between MFO and standardized test scores. Fifty-one independent samples were tested. MFO task quality was a significant predictor of effect size. (SLD)

This paper examines studies of the Minnesota Institute which were interpreted as demonstrating that students with learning disabilities are not distinguishable from other low-achieving students. Results of the reexamination indicate that learning disabilities and low achievement can be clearly differentiated, even in studies indicating that little…

Examines the effects of time restriction on social interaction in computer-mediated communication through a meta-analysis of applicable research. Derives hypotheses from Joseph Walther's social information processing perspective. Supports these hypotheses on social communication. (HB)

This review analyzes data-based studies dealing with self-management procedures (self-monitoring, self-evaluation, self-reinforcement, and self-instruction) used by individuals with mental retardation in public school settings. Although support is found for the positive effects of self-management, questions regarding efficient implementation of…

Analyzed data from 11 studies of concordance of mother/father attachment to an infant based on the Strange Situation. Found that security of attachment, type of insecurity, and subcategory classification of security to one parent depended on the other parent. Discussed parenting styles and infant temperament. (BC)

A meta-analysis of studies examining the interrater reliability of the standard practice of peer assessments of quality of care was conducted through the use of several databases. The mean weighted kappa of 21 findings from 13 studies was 0.31, which suggests that the interrater reliability of peer assessment is limited. (SLD)