A study extended the work of M. Allen and R. Preiss (1990) that analyzed the issues in public speaking textbooks and the level of accuracy with which scientific information is represented. A total score analysis of 112 textbooks showed no significant improvement in the accuracy of textbooks over time or with new editions. Findings of the…

The purpose of this study was to update the findings of previous quantitative research related to the effects of various student characteristics on measures of science achievement, cognitive reasoning, and science attitudes using the meta-analytic approach. Furthermore, the magnitude of the relationships between the study outcomes and the…

Until recently the literature on the impact of child sexual abuse has consisted disproportionately of retrospective studies of adults. Research on children allows for a developmental perspective and includes the first efforts at longitudinal studies of sexual abuse victims. This literature also has important relevance to other theory and research…

Providing educational guidelines for the reduction of death anxiety has resulted in a dramatic increase in the literature concerning death education (DE). However, research evaluating DE programs has yielded ambiguous results. In this study, researchers performed a meta-analysis of various DE interventions to assess the effectiveness of DE…

This bibliography was compiled in conjunction with a research project that conducted a meta-analysis of the developmental disabilities treatment literature dealing with the deceleration of excess behaviors. It lists 318 relevant articles published between January 1976 and December 1987 in 18 psychology and special education journals. The articles…

The study was designed to provide policymakers, administrators, and practitioners with reliable prevalence estimates of mental retardation, learning disabilities, and other handicapping conditions exhibited by juvenile offenders in order to guide fiscal and programmatic decision making. The research included five steps: (1) a literature search…

Operating on the premise that different approaches to computer-assisted instruction (CAI) may use different configurations of hardware and software, different curricula, and different organizational and personnel arrangements, this study explored the feasibility of collecting evaluations of CAI to evaluate the comparative cost-effectiveness of…

Although the first research on race and socioeconomic differences in nonverbal behavior was conducted in the 1930's, interest in these issues was not sustained. In order to further understanding of these previous studies, all the nonverbal categories that included more than three studies investigating race and class differences were examined. The…

Parametric measures to estimate J. Cohen's effect size (1966) from a single experiment or for a single study in meta-analysis are investigated. The main objective was to examine the principal statistical properties of this effect size--delta--under variance homogeneity, variance heterogeneity with known variance ratios, and for the Behrens-Fisher…

The effects of monetary gratuities on response rates to mail surveys have been considered in a number of studies. This meta-analysis examined: (1) the nature of the population surveyed; (2) the effects of gratuities in relation to the number of follow-ups; (3) whether the gratuity was equally effective across different populations; (4) whether the…

This paper reports research in progress. The purpose of this study was to examine the growing variety of research emerging in distance education and to suggest a method for synthesizing the results. Over 60 articles, representing both quantitative and qualitative studies published in major journals during the past two years, have been abstracted…

The purpose of this paper is to elucidate processes involved in the sibling relationship in terms of four dimensions that are focal in the literature: imitation, dominance, agonism (negative behavior directed towards a sibling), and prosocial behavior. A number of findings on these dimensions were culled from 24 studies, 18 of which were done…

Monte Carlo studies explored the sampling characteristics of Cohen's d and three approximations to Cohen's d when used as average effect size measures in meta-analysis. Reviews of 10, 100, and 500 studies (M) were simulated, with degrees of freedom (df) varied in seven steps from 8 to 58. In a two independent groups design, samples were obtained…

The purpose of this review of selected literature is to further extend knowledge about the effects of Head Start on cognitive development. From a comprehensive collection of over 1,400 documents concerning Head Start, 71 studies were selected for review and coded to permit a meta-analytic, quantitative analysis of findings. The coding system…

The meta analysis examined the ecological validity of 241 research studies concerned with changes in targeted behaviors in the moderately or profoundly retarded or autistic. Analysis of setting (least restrictive or not), maintenance, generalization, and social validity of procedures and outcomes indicated only a slight trend toward increased…