The results of a meta-analysis that found that rewards do not threaten intrinsic motivation have not been well accepted by those who argue rewards produce negative effects under a wide range of conditions. Nevertheless, the results and conclusions of the meta-analysis are held to be valid. (SLD)

A meta-analysis of 53 studies on social skills training of children with learning disabilities found a mean effect size of only 0.211, with few differences among teachers, peers, or children themselves who judged the effectiveness of the training. Discussion focuses on possible links between learning disabilities and social skills that might…

Analyzed findings from studies conducted from 1960-97 regarding the effects of school sexuality education on adolescents' sexual knowledge. The meta-analysis included 67 studies. The studies reported 72 outcomes regarding sexual knowledge, which were grouped into six variables related to sexuality knowledge. Results indicated that school-based…

Reviews all randomized controlled trials of the effectiveness of Information and Communication Technology (ICT) on spelling. Suggests that the teaching of spelling by using computer software may be as effective as conventional teaching of spelling, although the possibility of computer-taught spelling being inferior or superior cannot be…

Draws on meta-analyses to examine developmental trends in peer conflict resolution. Finds that peer conflict resolutions were most likely to involve negotiation, with coercion and then disengagement being the next most likely strategies. Patterns of conflict resolution varied as a function of age, peer relationships, assessment procedures, and…

Analyzes five studies on the effects of extra examination time for students with learning disabilities. These studies directly tested the Maximum Potential Thesis, but show only weak support for it. Discusses some methodological problems that weaken these studies. (SLD)

A review of 39 studies indicates that achievement-test scores decline over summer vacation. Meta-analysis results from combining the 13 most recent studies indicate that the summer loss equals about one month on a grade-level equivalent scale. Discusses implications for school calendar changes. Contains 68 references. (SLD)

Used meta-analytic procedures from 51 studies worldwide to assess the reliability of two self-report measures (Parent Acceptance-Rejection Questionnaire and Personality Assessment Questionnaire) which test the transcultural association between perceived parental acceptance/rejection and psychological adjustment. Both were found reliable for use…

This article reviews recent empirical investigations of imagination or mental practice in highly cognitive, realistic educational domains such as mathematics or learning computer applications. While mental practice has been a standard tool in training schedules devised by sports psychologists for several decades, with its efficacy studied…

There are several studies showing that working memory and intelligence are strongly related. However, working memory tasks require simultaneous processing and storage, so the causes of their relationship with intelligence are currently a matter of discussion. The present study examined the simultaneous relationships among short-term memory (STM),…

Augmentative and alternative communication (AAC) as an area of clinical and educational practice involves a myriad of decisions related to the symbols, devices, and strategies from which each client must choose. These decision-making points can be productively informed through evidence from comparative intervention studies. The purpose of this…

This meta-analysis pools data from 25 years of research on the order of acquisition of English grammatical morphemes by students of English as a second language (ESL). Some researchers have posited a "natural" order of acquisition common to all ESL learners, but no single cause has been shown for this phenomenon. Our study investigated…

This meta-analysis summarizes results from 30 randomized experiments that compare behavioral marital therapy with no-treatment control with distressed couples. Results showed that behavioral marital therapy is significantly more effective than no treatment (d=.585). Although behavioral marital therapy research studies tend to be conducted under…

During 2002-2003 there was an enquiry into the future of Research Assessment Exercises in Britain. Learned societies in Arts and Social Sciences who copied their submissions to the author for meta-analysis held very similar views. However these views are not strongly represented in the published report, because only a small minority of societies…

Eighty-three studies from 1982 to 2001 with formal training interventions were integrated via meta-analytic techniques to determine the effectiveness of interventions in their enhancement of performance, knowledge, and expertise at the individual, team or group, or organizational level. The studies were separated by research design, with the…