How does mindfulness modulate daily stress response: evidences from ambulatory assessment.

Mindfulness has been found to be associated with less adverse stress response. However, little is known about how mindfulness modulates stress response in the real daily life. The current study investigated the relation between daily stress and negative emotions, and explored a mediational link via perceived loss of control, and moderation by dispositional mindfulness, to better understand this association. A total of 95 college students were recruited to complete a questionnaire and to report on their stress, perceived loss of control and negative emotions in daily life. Mindful Attention Awareness Scale (MAAS) was used to assess dispositional mindfulness. Stress, perceived loss of control and negative emotions were assessed by ambulatory assessment. Stress was positively related with negative emotions at within-person level. Perceived loss of control mediated the relationship between stress and negative emotions. Furthermore, participants with higher levels of dispositional mindfulness showed an attenuated association between stress and anger, and also attenuated associations between perceived loss of control, and anger and fatigue at within-person level. These findings point to perceived loss of control as an important key factor in daily stress effects. Dispositional mindfulness appears to have beneficial effects in that it attenuates the impact of daily stressors on individuals' wellbeing. Clinical implications and limitations are discussed.