Supplemental Instruction (SI) incorporates collaborative learning in small, peer-led, group settings in order to integrate instruction in learning and reasoning skills with course content. Several meta-analyses speak to the efficacy of SI but fail to address selection bias due to ability/motivation and gender. In this study, SI was paired with a…

Validity generalization meta-analysis (VG) examines the extent to which the validity of an instrument can be transported across settings. VG offers correction and summarization procedures designed in part to remove the effects of statistical artifacts on estimates of association between criterion and predictor. By employing a random effects model,…

This article finds the empirical review of the intellectual effects of family factors by Lala Carr Steelman wanting because (1) it is selective and incomplete; (2) it ignores systematic aggregate effects; (3) it imposes linear analysis on nonmonotone relationships; and (4) it disregards most of the confounds identified by Steelman as crucial.…

The author responds to criticism by R. B. Zajonc on a review of the extant literature on the intellectual consequences of sibship size and birth order. (Author/LMO)

This review of literature on infant habituation and recognition memory performance as predictors of later IQ concludes that the level of prediction is (1) substantial; (2) higher for at-risk than nonrisk children; and (3) not higher than the level of predictions based on parental education and socioeconomic status. (MDM)

The Balanced Inventory of Desirable Responding (BIDR) is one of the most widely used social desirability scales. The authors conducted a reliability generalization study to examine the typical reliability coefficients of BIDR scores and explored factors that explained the variability of reliability estimates across studies. The results indicated…

During the 2009-2010 school year, Marzano Research Laboratory (MRL) was commissioned by Promethean Ltd. to conduct a second year evaluation study of the effects of Promethean ActivClassroom on student academic achievement. This report describes the findings from the second year study along with aggregate findings from the first and second year…

Meta-analytic techniques were used to analyze the effects of age, education, and work experience on General Aptitude Test Battery (GATB) validities and test scores. The sample consisted of 30,568 subjects from 143 Specific Aptitude Test Battery (SATB) validation or revalidation studies analyzed since 1972. The effect of these three variables on…

Meta-analysis is a technique for combining the summary statistics from previously conducted research studies to indicate the direction of results and provide an index of the magnitude of effect size. This paper focuses on the effect of the violation of the assumption of independence (that the value of any included statistic is in no way…

Drawing from work on the meta-analysis of over 500 validation studies of the General Aptitude Test Battery (GATB) by the U.S. Employment Service, the paper presents a methodological message and a substantive message. Gene Glass's methods, as used by Edwin Ghiselli in personnel selection, ignore study artifacts (sampling error, error of…

An analysis of 47 nursing research studies from 1981-90 related to predicting student success was conducted. Grade point average in nursing and science courses was the greatest cognitive predictor, parental education and age the greatest demographic predictors. Meta-analysis of four studies showed the significant effectiveness of interventions…

Analysis of studies on predictors of people's attitudes toward gifted education reveals that about 50 variables have been examined as potential sources of differences, but not a single variable emerges as a substantial explanatory factor. Major methodological problems in the studies are identified and proposals for future research are offered.…

Studies of variables predicting familial breast cancer (N=59) were analyzed to develop screening recommendations for women with nonhereditary familial breast cancer present. The pooled relative risk (RR) and cumulative probability were used to estimate risk. Data and conclusions are presented. Recommendations for screening and counseling are…

A meta-analysis of 82 recidivism studies (1,620 findings from 29,450 sexual offenders) identified deviant sexual preferences and antisocial orientation as the major predictors of sexual recidivism for both adult and adolescent sexual offenders. Antisocial orientation was the major predictor of violent recidivism and general (any) recidivism. The…

This metaanalysis examined different parental variables in order to determine which best predict children's externalizing behavior. Also examined were other variables that may influence the association of parenting and externalizing, such as type of child behavior, gender of parent and child, and age of child. Parental variables included in the…