Challenging behaviours should not be considered as depressive equivalents in individuals with intellectual disability.
Challenging behaviors are not depressive symptoms—use DSM-IV mood items when screening clients with ID.
01Research in Context
What this study did
The team checked if common challenging behaviors are really signs of depression in people with intellectual disability.
They gave standard DSM-IV mood scales to clients and ran stats to see if self-injury or aggression clustered with sadness or loss of interest.
What they found
The mood scales held together well, but challenging behaviors did not load on the same factor.
In plain words, hitting or head-banging did not travel with classic depressive symptoms in this group.
How this fits with other research
Martin et al. (1997) and Imam (2001) earlier said aggression can equal depression in severe ID; LeBlanc et al. (2003) now pushes back and says don’t count it.
Matson et al. (2008) looks like a clash—they found both DSM items and behavioral equivalents predicted depression. The difference: they used the broader interRAI-ID checklist, while the target stuck to pure DSM-IV clusters.
Hurley (2008) later agrees with the target: sad face, crying and no-interest best separate depressed from non-depressed adults, echoing the caution against using behavior alone.
Why it matters
When you screen for depression, stay with clear mood cues—sad affect, less pleasure, sleep or appetite change—instead of calling every spike in SIB a depressive episode. This keeps your treatment plan aimed at the right function and avoids unneeded meds.
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02At a glance
03Original abstract
BACKGROUND: Depression is one of the most common forms of psychopathology in people with intellectual disability (ID). The present study evaluated the utility of an expanded assessment of psychiatric symptoms and challenging behaviours, as measured by the Clinical Behavior Checklist for Persons with Intellectual Disabilities (CBCPID). METHODS: The CBCPID was administered to 92 people with ID, 35 of whom were diagnosed with a depressive disorder. RESULTS: Item and factor analysis of the scale indicated that depression was best assessed using the core DSM-IV symptoms of depressive disorder. Challenging behaviours such as self-injury or aggression were not closely associated with depression. Short scales using the core DSM-IV symptoms of depression were highly internally consistent. There was also evidence of the validity of these scales. CONCLUSIONS: This study found no evidence that challenging behaviours were depressive equivalents in this population. The present authors conclude that the assessment of depression in people with ID should focus on the core DSM-IV symptoms of depression.
Journal of intellectual disability research : JIDR, 2003 · doi:10.1046/j.1365-2788.2003.00456.x