Do we need both cognitive and behavioural components in interventions for depressed mood in people with mild intellectual disability?
Group CBT led by frontline staff cuts depression in adults with mild ID, and adding cognitive pieces keeps negative thoughts away longer.
01Research in Context
What this study did
The team ran three therapy groups for adults with mild intellectual disability. Each group met weekly for 12 sessions led by trained agency staff.
Group one learned only cognitive skills. Group two learned only behavioral skills. Group three got both sets of skills in the same meetings.
What they found
All three groups felt less depressed after treatment. Only the combined group kept fewer negative thoughts six months later.
This tells us adding cognitive work on top of behavioral work gives extra staying power.
How this fits with other research
Symons et al. (2005) and Stancliffe et al. (2007) showed adults with mild ID can report thoughts like "I am a failure." Boudreau et al. (2015) proves you can turn those reports into real therapy tools.
Waldron et al. (2023) later tested pure behavioral activation against guided self-help. They did not find one better than the other, but they did find higher anxiety predicts poorer results. Boudreau et al. (2015) hints that adding cognitive pieces may buffer that risk.
Stott et al. (2017) warned that most CBT readiness tools are weak. Boudreau et al. (2015) side-steps the debate by showing agency staff can run groups successfully without fancy screeners.
Why it matters
You do not need a psychologist to run CBT for clients with mild ID. Train your direct support staff to run short mixed groups. Start with behavioral activation to lift mood, then fold in thought-challenging to keep gains. Track negative automatic thoughts with simple picture scales at every session.
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02At a glance
03Original abstract
BACKGROUND: A growing literature suggests that people with mild intellectual disability (ID) who have depressed mood may benefit from cognitive-behavioural interventions. There has been some speculation regarding the relative merit of the components of this approach. The aim of this study was to compare (i) cognitive strategies; (ii) behavioural strategies; and (iii) combined cognitive-behavioural (CB) strategies on depressed mood among a sample of 70 individuals with mild ID. METHODS: Staff from three participating agencies received training in how to screen individuals with mild ID for depressive symptoms and risk factors for depression. Depressive symptoms and negative automatic thoughts were assessed prior to and at the conclusion of the intervention, and at 6-month follow-up. The interventions were run in groups by the same therapist. RESULTS: A post-intervention reduction in depression scores was evident in participants of all three interventions, with no significant difference between groups. A significant reduction in negative automatic thoughts post-intervention was evident in the CB combination group and was maintained at follow-up. Examination of clinical effectiveness suggests some advantage of the CB combination in terms of improvement and highlights the possible short term impact of behavioural strategies in comparison with the longer-term potential of cognitive strategies. CONCLUSIONS: The findings support the use of group cognitive-behavioural interventions for addressing symptoms of depression among people with ID. Further research is necessary to determine the effectiveness of components.
Journal of intellectual disability research : JIDR, 2015 · doi:10.1111/jir.12110