The presence of some (even limited) control is inconsistent with a deprivation (absence) of capacity for the purposes of s 27 of the Criminal Code (Qld), and the concept of severe or substantial impairment is not sufficient for a finding of unsoundness of mind. Expert evidence using causative language such as 'driven by' or 'accountable for' may not adequately address whether there was an actual deprivation of capacity. Evidence that mental illness was 'sufficient' to explain conduct does not necessarily establish that intoxication played no role in the deprivation of capacity.
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