Previous research has reported positive correlations between math achievement and the cognitive constructs of spatial visualization, working memory, and general intelligence; however, no single study has assessed variance in math achievement attributable to all three constructs, examined in combination. The current study fills this gap in the literature by demonstrating that general intelligence is a strong predictor of math achievement, with spatial visualization and working memory playing smaller, yet still significant roles. Spatial visualization and working memory differentially predicted math achievement in a domain-specific manner. In addition, evidence was found for variance in math achievement attributable to domain-specific working memory constructs. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]