This investigation: (1) tested the ability of an a priori hierarchical structure of self-concept derived from the Shavelson model to explain responses to the Self Description Questionnaire III (SDQ III); and (2) demonstrated the application and problems with the use of hierarchical confirmatory factor analysis. A first-order factor analysis…

Critical reanalysis of a previous Australian study comparing the effects of single-sex mathematics and mixed-sex mathematics instruction on students in grades seven and eight suggests that the randomly assigned class-type intervention had relatively little effect on mathematics achievement or attitudes, and that at least some effects favored…