The effects of mindfulness on executive processes and autobiographical memory specificity

Previous studies have found that mindfulness training reduces overgeneral memories and increases autobiographical memory specificity (e.g., Williams, Teasdale, Segal, & Soulsby, 2000). However, little work has investigated the mechanisms underlying this effect. The present study explored the role of executive processes as a mediator of mindfulness training effects in an unselected sample. An autobiographical memory task, a cognitive inhibition task, a motor inhibition task, a cognitive flexibility task and a motor flexibility task were administered before and after intervention. Compared to matched controls, mindfulness training participants showed increased autobiographical memory specificity, decreased overgenerality, and improved cognitive flexibility capacity and capacity to inhibit cognitive prepotent responses. Mediational analyses indicated that changes in cognitive flexibility partially mediate the impact of mindfulness on overgeneral memories. Results are discussed in terms of Conway’s autobiographical memory model (2005).