Guilty but Mentally Ill (GBMI)
Definition
A US verdict alternative introduced in some states from 1975: the defendant is found guilty (and sentenced) but is entitled to psychiatric treatment while incarcerated; it does not result in acquittal.
- Jurisdiction
- Some US states
- Introduced
- From 1975
- Effect
- Guilty verdict plus entitlement to psychiatric treatment while incarcerated
- Distinct from
- Not guilty by reason of insanity, which results in acquittal
Common questions
How does GBMI differ from a successful insanity defence?+
An insanity acquittal means the defendant is found not criminally responsible and is typically committed to a psychiatric facility rather than sentenced. GBMI instead results in a criminal conviction and sentence, with treatment provided alongside incarceration rather than instead of it.
Why was the GBMI verdict introduced?+
It emerged partly as a legislative response to public unease after high-profile insanity acquittals, offering jurors a middle option that holds the defendant criminally accountable while still directing them toward psychiatric treatment, rather than choosing only between full acquittal and an unqualified guilty verdict.
Related terms
- Appreciation vs Knowledge
- The MPC and Canadian Criminal Code use 'appreciate' rather than 'know,' requiring a deeper, emotionally integrated understanding of the nature or wrongfulness...
- BNS § 22
- India's insanity defence provision in the Bharatiya Nyaya Sanhita 2023, replacing IPC § 84: an act is not an offence if done...
- Durham Rule
- The 1954 US Court of Appeals (DC Circuit) product test: an accused is not criminally responsible if the unlawful act was the...
- Hari Singh Gond (2008)
- Indian Supreme Court ruling setting out the four elements for establishing the IPC § 84 (now BNS § 22) defence: mental illness...
- IDRA 1984
- Insanity Defense Reform Act 1984: US federal legislation passed after John Hinckley's acquittal that eliminated the volitional prong, raised the standard to...
- M'Naghten Rules
- The 1843 English House of Lords formulation providing that a defendant is not criminally responsible if, at the time of the offence,...
- MPC § 4.01 Substantial-Capacity Test
- The American Law Institute's 1962 insanity formulation: a person lacks criminal responsibility if, as a result of mental disease or defect, they...