A large body over the last 20 years has demonstrated that rumination is an important determinant of depression. Research has also shown that mindfulness practice can reduce rumination and depression. However, over this period the concept of rumination has evolved. Initially rumination was understood to be a single static construct that a person would engage in when they experience depressive mood. The Differential Activation Hypothesis introduced the idea that rumination involved an interaction between depressive mood and negative cognition. Later, this model was expanded with negative cognition seen to be the product of the memories of negative events and influenced by dysfunctional attitude. Rumination started to be viewed as an interactive cycle between depressive mood, memories of negative event and dysfunctional attitude. A separate but relevant literature has demonstrated the relationship between emotion and attention. However, to date no study has investigated the role of innate attention control capacity on the ruminative process. Similarly, despite attention control being viewed as a component of mindfulness, little research has investigated the relationship between attention control capacity and mindfulness.Thus, this study investigates how attention control capacity influences rumination and mindfulness. 392 adults recruited from two public universities and the general community were given a series of online survey questionnaires involving their depression and rumination levels, dysfunctional attitude, attention control, and different facets of trait mindfulness. Results found that attention control and dysfunctional attitude sequentially mediated the relationship between depressive mood and rumination. The mindfulness facets of Nonjudging and Nonreactivity also mediated the relationship between depressive mood and attention control. These results indicate that our theoretical understanding of the rumination process should include attention control for a more holistic conception. Further the results suggest that the enhancement of a Nonjudgemental attitude and Nonreactivity through mindfulness practice has the potential to interfere with the rumination process by enhancing a person's attention control capacity and decreasing the attention allocation effects of emotional arousal.