To lose the benefit of the Tsiaras/Verdins principles for self-induced drug psychosis, it is sufficient that the offender was aware the drug would affect judgment and control such that they would behave irrationally; foreknowledge of the specific type of offending or of dangerous violence is not required. However, for the self-induced psychosis to be an aggravating circumstance, the Crown must prove beyond reasonable doubt that the offender foresaw that taking the drug would make them dangerously psychotic. The status of victims as police or ambulance officers is not an aggravating circumstance where the offender did not know the victims' status. A self-induced mental state cannot justify the absence of cumulation between counts involving different victims.
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