There is increasing interest in meta-analysis in different fields due to the need to combine the results of primary research. One of the crucial concepts in combining results is weighting. This study examines how Hunter and Schmidt's method, weighting by sample size; Hedges and Vevea's method, weighting by inverse variance; and Osburn and…

"Jigsaw" is a peer learning procedure derived from social interdependence theory, which suggests that individuals positively linked by a common goal can benefit from positive and promotive social interactions (Aronson & Patnoe, 2011). Although jigsaw has often been presented as an efficient way to promote learning, empirical research…

Nearly all studies aiming to determine the effect of modern teaching methods on academic success using an experimental design contain control groups in which traditional methods are used. Effect of traditional methods in geometry and numbers learning domains on academic achievement has not been conclusively studied by researchers yet. On the other…

The influence of positive achievement motivation was tested by analyzing data for 594 Norwegian sixth graders and 21 previously published studies, with simultaneous categorization of subjects on positive achievement motivation and test anxiety/fear of failure. Analysis of variance and multiple regression analysis indicate that positive achievement…

This article describes a meta-analysis of research on school integration in Israel. The analysis addresses the effects of the ethnic composition of fourth- and sixth-graders. Four of 15 studies involved met the criteria of the research design. Significant differences were found when comparing integrated and non-integrated classrooms. (TJH)