The purpose of this research was to explore the role of General Factor of Personality (GFP) and adult attachment dimensions in marital quality through relationship attributions and emotional reactions. The sample consisted of 261 couples who were married at least more than one year and had no major stressful events in their lives up to the time of the study. In this study, the NEO-Five Factor Inventory (NEO-FFI), the Experiences in Close Relationships Questionnaire-Revised (ECR-R), the Relationship Attribution Measure (RAM), the Geneva Emotion Wheel (GEW), and the Perceived Relationship Quality Components (PRQC) were used for collecting the data. Structural equation modeling (SEM) was employed to analyze the data. The results suggest that attachment anxiety and attachment avoidance and GFP directly and indirectly, through relationship attributions and emotional reactions, were related to marital quality. In addition, relationship attributions are antecedent to emotional reactions. Based on the findings, an intrapersonal-situational model of marital quality is suggested.