Cognitive training as a facilitated self-help intervention for depression: a randomised interventional single centre treatment trial
1. Can concreteness cognitive training facilitated self-help produce robust and stable shifts in thinking style in dysphoric and moderately depressed individuals, relative to a no training control condition (treatment-as-usual) and relative to an active intervention controlling for non-specific factors (relaxation)?
2. Can cognitive training facilitated self-help in addition to treatment-as-usual significantly reduce rumination and depression in depressed patients relative to treatment-as-usual and relative to an active intervention controlling for non-specific factors (relaxation) in a primary care setting?
3. Does the shift in thinking style causally mediate the effects of cognitive training on rumination and depression? To investigate mediation using Baron and Kenny's criteria, we will investigate a series of supplementary research questions:
3.1. Does treatment condition have a significant effect on outcome?
3.2. Does treatment condition influence changes in the given cognitive process from before to after therapy?
3.3. Does change in the given cognitive process predict outcome?
3.4. Does change in the given cognitive process remain a significant predictor of outcome when controlling for treatment condition
3.5. Is the effect of treatment condition on outcome attenuated when controlling for change in the given cognitive process? A given cognitive process could be said to function as a mediator of facilitated self-help on outcome if all the above questions are answered "yes".
4. Is cognitive training feasible and acceptable as a potential self-help intervention?
5. What patient factors might predict response to the psychological intervention?
Devon and Torbay REC approved in September 2006 (ref: 06/Q2102/66)
Randomised interventional single centre treatment trial
Primary study design
Secondary study design
Randomised controlled trial
Patient information sheet
Not available in web format, please use the contact details below to request a patient information sheet
Topic: Mental Health Research Network, Primary Care Research Network for England; Subtopic: Depression, Not Assigned; Disease: Depression, All Diseases
1. Cognitive training self-help in addition to treatment-as-usual
2. Relaxation training self-help in addition to treatment-as-usual
The cognitive training facilitated self-help intervention will consist of an initial meeting lasting approximately 1.5 hours (subject to modification as the project progresses), during which the researcher will explain the rationale for why cognitive training is helpful and then practice relaxation or the cognitive training paradigm.
Follow Up Length: 6 month(s)
Study Entry: Single Randomisation only
Primary outcome measure
Hamilton Rating Scale for Depression - 17 item version (HRS-D). Timepoints were assessed at baseline pre-treatment, 2 months post-baseline assessment (post-treatment), after 3 months follow-up (i.e., after 5 months post-baseline) and after 6 months follow-up (i.e., 8 months post baseline assessment).
Secondary outcome measures
Depressive symptoms: the Beck Depression Inventory (BDI-II). Timepoints were assessed at baseline pre-treatment, 2 months post-baseline assessment (post-treatment), after 3 months follow-up (i.e., after 5 months post-baseline) and after 6 months follow-up (i.e., 8 months post baseline assessment).
Overall trial start date
Overall trial end date
Reason abandoned (if study stopped)
Participant inclusion criteria
1. Aged 18 years or older, either sex
2. Currently depressed patients, whether they are currently taking antidepressant medication or not
Target number of participants
Planned Sample Size: 120; UK Sample Size: 120
Participant exclusion criteria
1. Current co-morbid diagnosis or history of bipolar disorder, schizophrenia or other psychotic disorders
2. Current and clinically significant drug or alcohol dependence
3. Persistent anti-social behaviour
4. Persistent self-injury requiring clinical management/therapy
5. Learning disability (intelligence quotient [IQ] less than 70)
6. Organic brain damage
7. Current formal face-to-face psychotherapy/counselling (does not include computer-based cognitive behavioural therapy [CBT], psychoeducation, or bibliotherapy)
8. Unable to engage with facilitated self-help treatment for physical, practical or other reasons (e.g. unable to comprehend materials)
Recruitment start date
Recruitment end date
Countries of recruitment
Trial participating centre
Mood Disorders Centre
University of Exeter (UK)
The Queen s Drive
Medical Research Council (MRC) (UK) (ref: 72156)
Funding Body Type
Funding Body Subtype
Results and Publications
Publication and dissemination plan
Not provided at time of registration
Intention to publish date
Participant level data
Not provided at time of registration
Basic results (scientific)
2012 results in http://www.ncbi.nlm.nih.gov/pubmed/22085757
Watkins ER, Taylor RS, Byng R, Baeyens C, Read R, Pearson K, Watson L, Guided self-help concreteness training as an intervention for major depression in primary care: a Phase II randomized controlled trial., Psychol Med, 2012, 42, 7, 1359-1371, doi: 10.1017/S0033291711002480.