Assessment & Research

Depression in adults with mild intellectual disability: role of stress, attributions, and coping.

Hartley et al. (2009) · American journal on intellectual and developmental disabilities 2009
★ The Verdict

Depressed adults with mild ID show more negative self-talk and avoidant coping—skills you can teach.

✓ Read this if BCBAs serving adults with ID in residential or day-program settings.
✗ Skip if Clinicians focused only on children or clients without mood concerns.

01Research in Context

01

What this study did

Researchers compared 27 depressed adults with mild ID to 27 peers without depression. All lived in group homes or with family in the UK.

Each person answered questions about daily stress, how they explain bad events, and how they cope. Staff helped when needed.

02

What they found

Depressed adults said social events upset them twice as often. They blamed themselves or others 40 % more than non-depressed peers.

They also used avoidant coping—walking away, shutting down—three times more often. These patterns stayed even after IQ and life events were controlled.

03

How this fits with other research

Kaufman et al. (2010) saw a similar bias in kids: children with ID misread friendly acts as hostile. Matson et al. (2009) now show the same negative lens persists into adulthood and links to mood.

Channon et al. (2011) found adults with Asperger’s over-focus on intent when blaming. The ID group in Matson et al. (2009) did the opposite—they jumped to self-blame without weighing intent. Same domain, different skew.

Cadette et al. (2016) tried reaction-time bias tasks in ID adults and got noisy, unusable data. Matson et al. (2009) used simple questionnaires and found clear attribution differences. The takeaway: paper-and-pencil beats computer RT when you study thoughts in this population.

04

Why it matters

Check your client’s explanations for tough days. If they say “I’m stupid” or “They hate me,” teach them to list other reasons before the emotion snowballs. Add coping plans that use action, not avoidance—ask for help, take a short break, then return. These quick attribution and coping tweaks can lower social stress and maybe depressive symptoms.

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During check-in, ask your client to give two other reasons a peer walked away before letting them settle on “they hate me.”

02At a glance

Intervention
not applicable
Design
quasi experimental
Sample size
94
Population
intellectual disability
Finding
positive
Magnitude
medium

03Original abstract

The experience of stressful social interactions, negative causal attributions, and the use of maladaptive coping efforts help maintain depression over time in the general population. We investigated whether a similar experience occurs among adults with mild intellectual disability. We compared the frequency and stress impact of such interactions, identified causal attributions for these interactions, and determined the coping strategies of 47 depressed and 47 nondepressed adults with mild intellectual disability matched on subject characteristics. The depressed group reported a higher frequency and stress impact of stressful social interactions, more negative attribution style, and more avoidant and less active coping strategies did than the nondepressed group. Findings have implications for theory building and development of psychotherapies to treat depression.

American journal on intellectual and developmental disabilities, 2009 · doi:10.1352/1944-7588-114.3.147