R v Byrne
- Abnormality of the mind
- The resonable person would deem it abnormal
- setence reduce from murder to manslaughter
R v Byrne sets out the modern test for abnormality of the mind:
"a state of mind so different from ordinary human beings that the reasonable person would term it abnormal."
R v Martin
- Personality disorder amounts to abnormality of the mind
- it impairs mental responsibilities
- murder conviction quashed
Paranoia amounts to Diminished responsibility.
R v Campbell
- Murder conviction quashed + retrial ordered.
Epilepsy can amount to Diminished responsibility
R v Gittens
- convicted of manslaughter for diminished responsibility.
Depression can amount to Diminished responsibility.
R v Reynolds
- D was sentenced with manslaughter with diminished responsibility.
Post Natal depression can amount to Diminished responsibility.
R v Bradley (2007)
- Post traumatic stress disorder can amount to Diminished responsibility
R v Reynolds (2004)
- Asperger's syndrome can amount to Diminished responsibility.