It is fitting that the concept of all having one and having prizes is attributed to the Dodo-Bird. The dodo was a flightless bird. In shape and form it was similar to the modern turkey. The dodo was native to Mauritius, where it lived for thousands of years before domestic animals brought to Mauritius hunted it to extinction. The last live…

H. Bosch, F. Steinkamp, and E. Boller's (see record 2006-08436-001) meta-analysis, which demonstrated (a) a small but highly significant overall effect, (b) a small-study effect, and (c) extreme heterogeneity, has provoked widely differing responses. After considering D. B. Wilson and W. R. Shadish's (see record 2006-08436-002) and D. Radin, R.…

Meta-analyses were conducted to determine the magnitude of relationships between polymorphisms in 2 genes, ALDH2 and ADH1B, with alcohol dependence in Asians. For each gene, possession of 1 variant [asterisk]2 allele was protective against alcohol dependence, and possession of a 2nd [asterisk]2 allele did not offer significant additional…

The test of homogeneity developed by L. V. Hedges (1982) for the fixed effects model is frequently used in quantitative meta-analyses to test whether effect sizes are equal. Despite its widespread use, evidence of the behavior of this test for the less-than-ideal case of small study sample sizes paired with large numbers of studies is…

Sex differences in language use have been examined for many years, but no clear-cut conclusions exist. A meta-analysis of the existing literature was conducted regarding powerful/powerless language use, including 30 studies, with a total combined sample size of 3,012. The overall correlation indicated that men use more powerful language than…

Using meta-analysis, this research takes a look at studies included in a meta-analysis by R. Jaeger (1989) that compared the cut score set by one standard setting method with that set by another. This meta-analysis looks beyond Jaeger's studies to select 10 from the research literature. Each compared at least two types of standard setting method.…

How nursing science researchers conducting mixed method triangulation are using the heterogeneity of irrelevancy assumption in practice was studied. Seven questions were developed to reflect the implications for practice of the heterogeneity assumption. Answers to these questions were obtained from 23 written cases (14 articles, 1 presentation,…

A quantitative method, meta-analysis, is used to integrate research findings from a representative group of 38 coaching studies. Because different studies reported results on different scales, effect size was used to transform all results to a common metric. This meta-analysis showed that there are two distinct literatures on the effectiveness of…

Sixty-three studies which investigated cognitive achievement effects following interactive video (IV) instruction were integrated through a meta-analysis technique. Overall, mean achievement effect for IV was .530 (corrected for outliers), indicating that IV is an effective form of instruction. The effect is similar to that of computer-assisted…

Effects of day care experiences on children's cognitive, emotional, and social/behavioral development were investigated by meta-analytic techniques. Thirteen studies meeting domain specifications were coded. Twenty variables including an effect size were coded for each study. Twenty-two levels of the dependent variable were identified, yielding…

Formulas for estimating cross-validated hit-rates, the number of correct classifications into an a priori grouping structure, were examined. The following mathematical formulas were compared: McLachlan's formula estimator, two Snappin and Knoke smoothed formula estimators, and the analytic leave-one-out estimator. The R method was included as a…

There has been virtually no investigation of the differences between male and female responses to unjust conditions. This study is a meta-analysis of those studies investigating the conditions under which individuals will assume responsibility for lower outcomes under unjust discriminatory practices. Three conditions were investigated which…

According to Gilligan (1982) there are two different orientations for describing moral development: a justice orientation characteristic of males, and a care orientation characteristic of females. Gilligan claims that the care orientation is confounded with the justice orientation in Kohlberg's (1983) conceptualization of Stage 3: mutual…

Meta-analysis techniques were used to analyze the effects of different types of aids to learning science concepts from textual materials. The studies analyzed dealt with aids for selecting the important information contained in written materials and aids for building internal connections among the parts of printed materials. Studies pertaining to…

Meta-analysis was used to conduct an integrative review of the research on modifying attitudes toward persons with disabilities. Prior reviews, using small samples and lacking systematic data collection and analysis, were unable to draw firm conclusions about the effectiveness of attitude modification techniques. In the hope of correcting these…