A wealth of research has demonstrated that they way in which the investigators recall our personal, autobiographical memories is influential in the course of depression. Biases in the recall of autobiographical memory occur in the midst of a depressive episode, and are shown to prolong symptoms, however these biases also remain when depression remits, and may predispose the individual towards relapse. A novel cognitive intervention, MemFlex, aims to train individuals to be flexible in their retrieval of autobiographical memories, and thereby reduce depressive relapse. Changes in memory bias may also have an effect on intermediate processes that increase risk of depression, such as rumination, impaired problem solving, and cognitive avoidance. This feasibility trial compares the effects of MemFlex and Psychoeducation in their ability to reduce memory bias and intermediate cognitive risk factors, and thereby depressive relapse, in individuals remitted from Major Depressive Disorder. Clinical outcome and process measures will be assessed immediately following completion of the intervention, at 6 months post-intervention, and at 12 months post-intervention. If encouraging, the results of this pilot trial may provide a foundation for a later phase trial.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Enrollment
70
As in experimental arm description
As in experimental arm description
MRC Cognition and Brain Sciences Unit
Cambridge, United Kingdom
Cambridge and Peterborough NHS Foundation Trust
Cambridge, United Kingdom
Time to depressive relapse
Length of time from post-intervention assessment to occurrence of any major depressive episode within the 12 month follow-up period
Time frame: 12 months post-intervention
Number of depression free days at 12 month follow-up
Number of depression free days as indexed by the Longitudinal Interval Follow-up Evaluation (Keller et al., 1987)
Time frame: 12 months post-intervention
Depressive status at 12 month follow-up
Presence of a Major Depressive Episode as indexed by the Longitudinal Interval Follow-up Evaluation (Keller et al., 1987)
Time frame: 12 months post-intervention
Depression symptoms at 12 month follow-up
Score on the Beck Depression Inventory
Time frame: 12 months post-intervention
Autobiographical memory retrieval
Scores for specific and alternating blocks of the alternating instructions autobiographical memory task (Dritschel et al., 2013)
Time frame: Measured within one week of completing the intervention
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