Psych CASC / OSCE · Intellectual disability — forensic dual disability
Dual-disability court liaison — CASC communication station
MRCPsych/FRANZCP-style CASC: accessible explanation of fitness and supports, management of yes-saying, multiagency next steps, and dignity-preserving dual-disability communication.
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Target exams
Station brief
Format. Communication station, approximately 7–10 minutes active time after reading. You are the dual-disability psychiatry registrar in court liaison clinic. [2]
Candidate instructions. Meet a 25-year-old man with mild intellectual disability charged with assault after a fight with a flatmate. Support worker interrupts frequently. Solicitor wants a quick “unfit” letter based on old IQ 65. Explain in plain language what you will assess (fitness now, not guilt), check understanding with teach-back, address yes-saying, involve the support worker without letting them take over, and outline next steps (further assessment, possible education/supports, multiagency plan). Do not invent statute section numbers. Do not humiliate. [1][2]
Candidate scenario
Your patient is 25, lives in shared supported housing, mild ID, short-phrase speech, anxious in formal rooms. He says: “The police talked a long time. I said I did it so I could go home.” Support worker: “He doesn’t understand anything — just write he’s unfit.” Solicitor presses for same-day global unfitness opinion. No acute psychosis. Flatmate conflict after money borrowed and not returned; patient has also been hit by peers before (possible victim–offender overlap). [1][4]
Marking domains
- Greets the person first; sets respectful roles for support worker and solicitor
- Plain-language explanation of fitness now vs deciding guilt vs past mental state
- Teach-back; checks for yes-saying and interview pressure (suggestibility pearl)
- Avoids equating IQ 65 with automatic unfitness
- Offers communication supports and possible further sessions / education if needed
- Mentions multi-source information and safety for both parties
- No invented legal section numbers; acknowledges local process
- Empathy, non-stigmatising language, clear summary of next steps [1] [2] [3] [4]
Reveal assessor key
Open. Introduce yourself to the person first. “I am a doctor who helps people understand court. I will talk to you in short bits and check I am clear.” Thank the support worker: “Please help if he wants — I will ask him first.” [2]
Explain fitness. “Fitness means: can you understand what the court is about, talk with your lawyer, and decide what to do about the charge — today, with help. It is not the same as ‘did you do it’.” Use teach-back: “Tell me in your own words what fitness means.” [2]
Suggestibility. Explore the police interview: long talk, saying yes to go home — validate that people with learning disability can say yes when pressured (Clare and Gudjonsson teaching). Do not decide guilt. Flag that statements need careful handling with legal advice. [1]
Reject IQ shortcut. Empathic but firm: old IQ alone does not make someone unfit forever. May need more time, Easy Read materials, and reassessment. Restoration education possible for some knowledge gaps. [2]
Wider plan. Safety in shared house; both assault and possible prior victimisation; dual-disability follow-up; communication supports for future interviews; multiagency housing review. Local diversion or court processes named only at principle level. [3][4]
Close. Summarise next appointment; written Easy Read summary if available; check understanding; thank all parties; affirm dignity. [2]
References
- [1]Clare IC, Gudjonsson GH Interrogative suggestibility, confabulation, and acquiescence in people with mild learning disabilities Br J Clin Psychol, 1993.PMID 8251959
- [2]Wall BW, Krupp BH, Guilmette T Restoration of competency to stand trial: a training program for persons with mental retardation J Am Acad Psychiatry Law, 2003.PMID 12875497
- [3]Holland T, Clare IC, Mukhopadhyay T Prevalence of criminal offending by men and women with intellectual disability and the characteristics of offenders J Intellect Disabil Res, 2002.PMID 12061335
- [4]Latvala A, Tideman M, Søndenaa E, et al. Association of intellectual disability with violent and sexual crime and victimization Psychol Med, 2023.PMID 35238292