A comprehensive review of research was conducted on teaching science to students with significant cognitive disabilities. Guidelines from the National Science Education Standards were used to identify categories of studies based on the strands of science. A total of 11 studies were identified from the 20 years of literature searched. In general,…

Quality of life (QoL) is increasingly becoming a concept researched empirically and theoretically in the field of economics. In urban economics in particular, this increasing interest stems mainly from the fact that QoL affects urban competitiveness and urban growth: research shows that when households and businesses decide where to locate, QoL…

One current area of dispute in the psychological literature is the inclusion of and proper meta-analytic data analysis procedures for single-subject designs. The current single-subject meta-analysis (N = 25) investigated the effect of time-out for the reduction of disruptive classroom behaviors in nondevelopmentally delayed children. Two separate…

Most discussions about special education leadership address the work of principals and district administrators, without reference to the collective and distributed forms of leadership that have taken center stage in contemporary discussions about improving schools. To explore the contributions of and roles for teacher leadership in special…

Is the United States in danger of losing its competitive edge in science and technology (S&T)? This concern has been raised repeatedly since the end of the Cold War, most recently in a wave of reports in the mid-2000s suggesting that globalization and the growing strength of other nations in S&T, coupled with inadequate U.S. investments in…

This article reviews research on the achievement outcomes of three types of approaches to improving elementary mathematics: mathematics curricula, computer-assisted instruction (CAI), and instructional process programs. Study inclusion requirements included use of a randomized or matched control group, a study duration of at least 12 weeks, and…

In the midst of keen controversies on the impact of high-stakes testing and test-driven external accountability policy, the more balanced and careful selection, interpretation, and use of scientific research evidence are crucial. This article offers a critical synthesis of cross-state causal-comparative and correlational studies that explored the…

This article systematically reviews research on the achievement outcomes of four types of approaches to improving the reading success of children in the elementary grades: reading curricula, instructional technology, instructional process programs, and combinations of curricula and instructional process. Study inclusion criteria included use of…

Analyses of sex differences in personality have been reported only in particular scales or individual domains. In this study, a psychometric meta-analysis of adult sex differences in self-reported personality was conducted based on each of the "big five" factors. Examination of 76 studies (1,057 separate effect sizes) on 35 personality…

The question of how high a response rate is needed in order for telephone surveys to obtain data that accurately represent the entire sample, was investigated via reevaluating results of three previously published studies and reporting on three 1989 studies for the first time. The three previous studies indicated that, if the sample…

Literature on achievement effects of practical applications of group-based mastery learning in elementary and secondary schools over at least four weeks is examined, using the best-evidence synthesis review technique (a combination of meta-analysis and narrative reviews). There was essentially no evidence to support the effectiveness of…

The random variable p and its functions figure in several "tests of combined significance," meta-analysis summaries based on sample significance values, and ps have been used singly, as well as in other tests for evaluating the outcomes of individual research studies. In this work, asymptotic distributions of the sample one-sided…

Assessed the validity of Hackman and Oldham's Job Characteristics Model by conducting a comprehensive review of nearly 200 relevant studies on the model as well as by applying meta-analytic procedures to much of the data. Available correlational results were reasonably valid and support the multidimensionality of job characteristics and their…

The original authors respond to a critique of their meta-analysis of 94 studies which had failed to support the presence of distinctive Wechsler Intelligence Scale for Children profiles for learning disabled children. The critique contended such a pattern does exist. (Author/DB)

As part of a continuing dialog concerning the validity of a meta-analysis of 94 studies suggesting that there is a lack of any distinctive pattern in the Wechsler Intelligence Scale for Children (Revised) profiles for learning disabled children, this article maintains the view that such differences do exist. (DB)