The study findings suggest that MBCT is as effective for patients with recurrent depression who are currently depressed as for patients who are in remission. Directions towards a better understanding of the mechanisms of action of MBCT are given, although future research is needed to support these hypotheses.
Long-term outcome after MBCT in depressed patients was comparable to those who were in remission at the start of the trial. These findings lend further support to the notion that recurrent depressed patients meeting the criteria of a depressive episode do not need to be excluded from MBCT.
Mindfulness-based cognitive therapy (MBCT) has been shown to be efficacious in reducing relapse rate and depressive symptoms in patients with recurrent depression. To date, little is known about the underlying cognitive mechanisms. We investigated the role of attention with the attention network test in a randomized controlled trial with 34 MBCT patients and 37 waiting-list control patients. In the MBCT group depressive symptoms and ruminative thinking decreased and mindfulness skills increased. However, no differential changes in either specific, basal components of attentional processes (alerting, orienting and executive attention) or more general attentional functioning were observed. These results seem to fit in the pattern, emerging from recent research findings, that suggests that it might be especially the second component of mindfulness as described by Bishop (Bishop et al., 2004)-a shift towards an attitude with more openness and acceptance-that mediates the efficacy of short-term mindfulness interventions.
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