Hong Kong Case Law: Decisions & Judgments | LexChat

Hong Kong Case Law

Limits on expert opinion
  • 6 Jun 2014

    HKSAR v. LO CHUN SIU

    Citation
    HKSAR v. LO CHUN SIU
    Court
    Court of Appeal
    Case number
    CACC90/2013

    Court held that psychiatrists may testify about the nature, severity and functional effects of ADHD and how impulsivity can impair self-control but may not pronounce on the ultimate legal question whether the abnormality 'substantially impaired' mental responsibility; the trial judge erred by directing jury to ignore ADHD in assessing provocation (both subjective limb and gravity assessment) and failing to instruct that ADHD-related characteristics could be considered when assessing gravity; that misdirection was material and could not be cured by applying the proviso; appeal allowed, convict…