Moderated multiple regression (MMR) has become a fundamental tool for applied researchers, since many effects are expected to vary based on other variables. However, the inherent complexity of MMR creates formidable challenges for adequately performing power analysis on interaction effects to ensure reliable and replicable research results. Prior…

Discusses the concept of temperament interactions in the context of statistical interaction. Categorizes temperament interactions that involve temperament as an independent variable, as a dependent variable, or as both. Describes use of hierarchical multiple regression for the analysis of temperament interactions. (Author/CI)

The purpose of the study described here was to identify indices of state efforts to promote equal opportunity in higher education that might have influenced state appropriations. In addition, an attempt was made to discover common economic and demographic characteristics of the 50 states that appear to influence state egalitarian efforts. The…