Psych CASC / OSCE · Forensic psychiatry — sexual offending
Explain sexual-offence risk assessment and community conditions to a family member — CASC communication station
MRCPsych/FRANZCP-style CASC: explain legal vs clinical ideas, static/dynamic/protective factors, supervision conditions, residual uncertainty, and multi-agency principles without graphic detail or stigma language.
On this page & tools
Target exams
Station brief
Format. Communication station, approximately 7–10 minutes active time after reading. You are the forensic psychiatry registrar. The examiner plays the adult sibling of a patient preparing for community forensic follow-up after sexual offences. [2]
Candidate instructions. Explain, in plain non-sensational language, how the team assesses risk of further sexual harm. Cover multi-source assessment, what a static score means (group ranking, not destiny), changeable factors and strengths, community conditions (no child contact, substances, treatment, supervision), multi-agency principles without inventing statute numbers, and residual uncertainty. Avoid graphic offence detail. Check understanding and invite questions. [1][3]
Candidate scenario
The sibling says: "The report said his static risk score is high because of past offences. Does that mean he will definitely do it again? People at work call him a monster. What are you actually checking before he lives in the community, and will children next door be safe? Can treatment cure this?" The patient has finished offence-focused group work, is alcohol-free for months, and will have supervised conditions. [1][4][5]
Marking domains
- Empathy; non-stigmatising, non-sensational language
- Explains multi-source structured assessment (files + interview + tools)
- Distinguishes static group ranking from dynamic/protective change
- Describes concrete conditions (contact rules, substances, treatment, supervision)
- Explains residual uncertainty without false reassurance or fatalism
- Addresses public/neighbour safety and multi-agency principles (no invented statutes)
- Checks understanding; invites questions [2][3]
Reveal assessor key
Open. Thank sibling; acknowledge fear and hope; set purpose/time; reject "monster" labelling while taking past harm seriously. [3]
Explain method. We review court and hospital files, talk with your brother and the team, and use structured tools. Tools help rank group risk from history; they do not say what one person will certainly do. We also look at how he is now and what supports he will have. [1][2]
Static vs changeable. The high static band reflects past offences and will not disappear. What can change is alcohol use, treatment engagement, self-control skills, housing stability, and whether he has access to people who could be harmed. Strengths matter in planning. [1][4]
Conditions and safety. Community living is planned with conditions: no unsupervised contact with children; ongoing treatment/supervision; alcohol monitoring if needed; clear stop rules if risk rises. Other agencies may share information lawfully for public protection. We cannot promise zero risk; we manage and monitor it. Treatment reduces risk and builds skills; it is not a magical cure of all risk. [3][5]
Close. Summarise; invite questions; offer appropriate contact points within confidentiality rules. [3]
References
- [1]Hanson RK, Thornton D, Helmus LM, et al. What Sexual Recidivism Rates Are Associated With Static-99R and Static-2002R Scores? Sex Abuse, 2016.PMID 25810478
- [2]Hanson RK, Morton-Bourgon KE The accuracy of recidivism risk assessments for sexual offenders: a meta-analysis of 118 prediction studies Psychol Assess, 2009.PMID 19290762
- [3]Large MM, Ryan CJ, Nielssen OB Helpful and unhelpful risk assessment practices Psychiatr Serv, 2010.PMID 20439381
- [4]de Vries Robbé M, de Vogel V, Koster K, et al. Assessing protective factors for sexually violent offending with the SAPROF Sex Abuse, 2015.PMID 25210106
- [5]Seto MC The Motivation-Facilitation Model of Sexual Offending Sex Abuse, 2019.PMID 28715948