Procedural discourse in intellectual disability and dual diagnosis.
Adults with ID plus psychosis give shorter, less complete how-to stories than ID-only peers—so test procedural talk, not just vocabulary.
01Research in Context
What this study did
Researchers asked adults with intellectual disability to explain a simple dice game. Some had psychosis too. The team counted how many key steps each person shared.
They wanted to see if the dual-diagnosis group told the story as clearly as the ID-only group.
What they found
The adults with ID plus psychosis left out more steps. Their how-to talk looked like the sparse stories seen in schizophrenia.
The ID-only adults gave fuller, better-sequenced explanations.
How this fits with other research
Bouras et al. (2004) already showed that people with both ID and schizophrenia-spectrum disorders have worse daily living skills than those with SSP alone. The new study adds that their spoken instructions are also thinner.
Dewsbury (2003) warns that we still lack a gold-standard way to spot depression in this population. Taken together, the papers say: check both mood and communication when you assess.
Constantino et al. (2003) found that standard DSM cues can flag bipolar disorder in adults with ID. Van der Molen et al. (2010) now show that a quick dice-game retell can flag psychosis-linked discourse gaps. Both push for low-cost add-ons to your intake.
Why it matters
If a client skips steps or seems vague when giving directions, do not chalk it up to ID alone. Try a brief procedural-retell task. Fewer steps may signal psychosis, prompting a referral and shaping clearer goals for listener-perspective training.
Want CEUs on This Topic?
The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.
Join Free →Ask your adult client to explain a simple board game and count the steps they mention—if they give fewer than four, flag for possible psychosis and consult the psychiatrist.
02At a glance
03Original abstract
BACKGROUND: Knowledge of discourse abilities of adults with intellectual disability (ID) and mental illness is limited. The present study examined the procedural discourse skills of two cohorts of adults with ID - one cohort with (n = 7) and one cohort without (n = 7) a psychiatric diagnosis of psychosis. METHODS: Participants completed the 'dice game', a procedural discourse elicitation procedure that has been used by previous researchers. RESULTS: Results revealed that while all participants demonstrated an understanding of the task, participants with ID alone were more able to communicate the key elements of the game than the participants in the dual diagnosis group. CONCLUSIONS: Results of this investigation suggest that individuals with dual diagnosis have difficulties that may relate to previously identified discourse impairments in people with schizophrenia, and this may relate to a larger difficulty in taking into account the listener's needs.
Journal of intellectual disability research : JIDR, 2010 · doi:10.1111/j.1365-2788.2009.01229.x